Ngan Hang de Thi 2010

8/9/2019 Ngan Hang de Thi 2010

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Tuyn tp cc d thi th i hc theo tng chuyn thuc cu trc dthi H-C nm 2009

K thi th i hcNm hc 2008-2009

Bi s 1(Thi gian lm bi : 45 x 1,8 pht/ 1cu = 80 pht)

H Ni, Ngy 05 thng 01 nm 2009Vn 1

Cu to nguyn t- Bng tun hon Lk ho hc

(2)

1. Electron c tm ra vo nm 1897 bi nh bc hc ngi Anh Tom - xn (J.J. Thomson). c im no sau y khng phi ca electron?A. Mi electron c khi lng bng khong 1

1840khi lng ca nguyn t nh

nht l H.B. Mi electron c in tch bng -1,6 .10 -19 C, ngha l bng 1- in tchnguyn t.C. Dng electron b lch hng v pha cc m trong in trng.D. Cc electron ch thot ra khi nguyn t trong nhng iu kin c bit (psut kh rt thp, in th rt cao gia cc cc ca ngun in).2. Cc ng v c phn bit bi yu t no sau y?

A. S ntron B. S electron ho tr. C. S proton D. S lpelectron.3. K hiu no trong s cc k hiu ca cc obitan sau l sai?

A. 2s, 4f B. 1p, 2d C. 2p, 3d D. 1s, 2p4. phn lp 3d s electron ti a l:

A. 6 B. 18 C. 10 D. 145. Ion, c 18 electron v 16 proton, mang s in tch nguyn t l:

A. 18+ B. 2 - C. 18- D. 2+6. Cc ion v nguyn t: Ne, Na + , F _ c im chung l:

A. S khi B. S electron C. S proton D. S notron7. Cu hnh electron ca cc ion no sau y ging nh ca kh him ?

A. Te2+ B. Fe2+ C. Cu+ D. Cr3+8. C bao nhiu electron trong mt ion 5224 Cr3+ ?

A. 21 B. 27 C. 24 D. 529. Tiu phn no sau y c s proton nhiu hn s electron?

A. Nguyn t Na. B. Ion clorua Cl -. C. Nguyn t S. D. Ion kali K + .10. Nguyn t ca nguyn t c in tch ht nhn 13, s khi 27 c s electronho tr l: A. 13 B. 5 C. 3 D. 411. Nguyn t ca nguyn t ho hc c cu hnh electron 1s 22s 22p 63s 23p64s 1 l:

A. Ca B. K C. Ba D. Na12. Trong cc cu hnh electron sau, cu hnh no sai ?

A.1s22s 22p 2x2p y2p z B.1s22s 22p2x2p2y2p2z3sC.1s22s 22p 2x 2p y D.1s22s 22p x2py2p z

13. Cc electron thuc cc lp K, M, N, L trong nguyn t khc nhau v:A. Khong cch t electron n ht nhn B. bn lin kt vi ht

nhnC. Nng lng ca electron D. Tt c A, B, C u ng.

14. Trong nguyn t, cc electron quyt dnh tnh cht ho hc l :A. Cc electron ho tr. B. Cc electron lp ngoi cng.

PGS-TS Nguyn Xun Tr ng ,PGS-TS ng Th Oanh Khoa Hohc HSP H Ni

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C. Cc electron lp ngoi cng i v i cc nguyn t s,p v c lp st ngoicng vi cc nguyn t h d, f. D. Tt c A, B, C u sai.15.Mt nguyn t ho hc c nhiu loi nguyn t c khi lng khc nhau v l do

no sau y ?A. Ht nhn c cng s ntron nhng khc nhau v s proton.B. Ht nhn c cng s proton. nhng khc nhau v s ntronC. Ht nhn c cng s ntron nhng khc nhau v s electronD. Phng n khc16. Nguyn t khi trung bnh ca ng kim loi l 63,546. ng tn ti trong t

nhin vi hai loi ng v l 63Cu v 65Cu. S nguyn t 63Cu c trong 32g Cu l:A. 6,023. 10 23 B. 3,000.10 23 C. 2,181.10 23 D. 1,500.10 23

17. Nguyn t ca nguyn t A c tng s electron trong cc phn lp p l 7.Nguyn t ca nguyn t B c tng s ht mang in nhiu hn tng s htmang in ca A l 8. A v B l cc nguyn t:

A. Al v Br B. Al v Cl C. Mg v Cl D. Si v Br18. Mt nguyn t R c tng s ht mang in v khng mang in l 34, trong s ht mang in gp 1,833 ln s ht khng mang in. Nguyn t R v vtr ca n trong bng HTTH l:

A. Na 11, chu k III, nhm IA B. Mg 12, chu k III, nhm IIAB. F 9, chu k II, nhm VIIA D.Ne 10, chu k II, nhm VIIIA

19. Cation X 3+ v anionY2- u c cu hnh electron phn lp ngoi cng l2p 6. K hiu ca cc nguyn t X,Y v v tr ca chng trong bng HTTH l:

A. Al 13, chu k III, nhm IIIA v O 8, chu k II, nhm VIA.B. Mg 12, chu k III, nhm IIA v O 8, chu k II, nhm VIA.C. Al 13, chu k III, nhm IIIA v F 9, chu k II, nhm VIIA.D. Mg 12, chu k III, nhm IIA v F 9, chu k II, nhm VIIA.

20. Nhng c trng no sau y ca nguyn t cc nguyn t bin i tunhon:

A. in tch ht nhn nguyn t. B. T khi.C. S lp electron. D. S electron lp ngoi cng.21. Nguyn t ca nguyn t no lun cho 1e trong cc phn ng ho hc?

A. Na S th t 11. B. Mg S th t 12.C. Al S th t 13. D. Si S th t 14.

22.. Cc nguyn t ca nhm IA trong bng HTTH c s no chung ?A. S ntron. B. S electron ho tr.C. S lp electron D. S electron lp ngoi cng.

23. Cc n cht ca cc nguyn t no sau y c tnh cht ho hc tng tnhau?

A. as, Se, Cl, Fe. B. F, Cl, Br, I.C. Br, P, H, Sb . D. O, Se, Br, Te.24. Dy nguyn t ho hc c nhng s hiu nguyn t no sau y c tnh

cht ho hc tng t kim loi natri?A. 12, 14, 22, 42 B. 3, 19, 37, 55.C. 4, 20, 38, 56 D. 5, 21, 39, 57.

25. Nguyn t no sau y c tnh cht ho hc tng t canxi?A. C B. K C. Na D. Sr

26.. Nguyn t ca nguyn t no trong nhm VA c bn knh nguyn t ln nht?A. Nit B. Photpho C. asen D. Bitmut

27.. Dy nguyn t no sau y c xp theo chiu bn knh nguyn t tng?A. i, Br, Cl, P B. C, N, O, F C. Na, Mg, Al, Si D. O, S, Se, Te.

28.. S bin i tnh cht kim loi ca cc nguyn t trong dy Mg - Ca - Sr - Bal:


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A. tng. B. gim. C. khng thay i. D. va gim vatng.29.. S bin i tnh cht phi kim ca cc nguyn t trong dy N - P - As -Sb -Bil:

A. tng. B. gim. C. khng thay i. D. va gim vatng.30.. Cp nguyn t ho hc no sau y c tnh cht ho hc ging nhau nht:

A. Ca, Si B. P, as C. Ag, Ni D. N, P31. Mc oxi ho c trng nht ca cc nguyn t h Lantanit l:A. +2 B. +3 C. +1 D. +4

32. Cc nguyn t ho hc nhm IA ca bng HTTH c thuc tnh no sauy ?

A. c gi l kim loi kim. B. D dng cho electron.C. Cho 1e t cu hnh bn vng. D. Tt c u ng.

33. Tnh cht baz ca hiroxit ca nhm IA theo chiu tng ca s th t l:A. tng B. gim C. khng thay i D. va gim va

tng34. Nhit si ca cc n cht ca cc nguyn t nhm VIIA theo chiu tngs th t l:

A. tng. B. gim. C. khng thay i. D. va gim va tng.35.. S hiu nguyn t ca cc nguyn t trong bng tun hon cho bit:

A. S electron ho tr B. S proton trong ht nhn.C. S electron trong nguyn t. D. B, C ng.

36.. Trong 20 nguyn t u tin trong bng h thng tun hon, s nguyn tc nguyn t vi hai electron c thn trng thi c bn l:

A. 1 B. 3 C. 2 D. 437. m in ca dy nguyn t F, Cl, Br, I bin i nh sau:

A. tng. B. gim. C. khng thay i. D. va gim va

tng.38.. m in ca dy nguyn t Na, Al, P, Cl, bin i nh sau:A. tng. B. gim. C. khng thay i. D. va gim va tng.

39.Tnh cht baz ca dy cc hiroxit: NaOH, Mg(OH) 2, Al(OH)3 bin i nhsau :

A. tng. B. gim. C. khng thay i. D. va gim va tng.40. Tnh cht axit ca dy cc hiroxit : H2SiO3, H2SO4, HClO4 bin i nh sau :

A. tng. B. gim. C. khng thay i. D. va gim va tng.41. Nguyn t Cs c s dng ch to t bo quang in v:

A. Gi thnh r, d kim. B. C nng lng ion ho thp nht.C. C bn knh nguyn t ln nht. D. C tnh kim loi mnh nht.

42. Mt nguyn t thuc nhm VIIA c tng s proton, ntron v electron trongnguyn t bng 28. Cu hnh electron ca nguyn t l:A. 1s22s 22p63s 23p 5 B. 1s22s 22p5C. 1s22s 22p 63s 23p6 D. 1s 22s 22p6

43. Hai nguyn t A v B ng k tip nhau trong mt chu k c tng s protontrong hai ht nhn nguyn t l 25. A v B thuc chu k v cc nhm:

A. Chu k 2 v cc nhm IIA v IIIA. B. Chu k 3 v cc nhm IA v IIA.C. Chu k 3 v cc nhm IIA v IIIA. D. Chu k 2 v cc nhm IVA v VA.

44.. Cho 6,4g hn hp hai kim loi thuc hai chu k lin tip, nhm IIA tc dnght vi dung dch HCl d thu c 4,48 l kh hiro (ktc). Cc kim loi l:

A. Be v Mg B. Mg v Ca C. Ca v Sr D. Sr v Ba45. Cho cc phn t BeH 2 v C2H2, nhn nh no sau y v hai phn t trnl ng?

A. Cc nguyn t Be v C u trng thi lai ho sp 3.


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B. Cc nguyn t Be v C u trng thi lai ho sp 2.C. Cc nguyn t Be v C u trng thi lai ho spD. Cc nguyn t Be v C u trng thi lai ho sp 3d2.

p n1C 11B 21A 31B 41B2A 12O 22D 32D 42B3B 13D 23B 33A 43C4C 14A 24B 34A 44B5B 15B 25D 35D 45C6B 16C 26D 36D7C 17B 27D 37B8A 18A 28A 38A9D 19A 29B 39B10C 20D 30D 40A


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K thi th i hc

Nm hc 2008-2009Bi s 2

(Thi gian lm bi : 65 x 1,8 pht/ 1cu = 120 pht)

H Ni, Ngy 05 thng 02 nm 2009

Vn 2

Phn ng oxi ho kh . tc phn ng v cn bng ho hc(2)

1. Trong phn ng iu ch kh oxi trong phng th nghim bng cch nhitphn mui kali clorat, nhng bin php no sau y c s dng nhm mcch tng tc phn ng?

A. Dng cht xc tc mangan ioxit (MnO 2).

B. Nung hn hp kali clorat v mangan ioxit nhit cao.C. Dng phng php di nc thu kh oxi.D. Dng kali clorat v mangan ioxit khan.

Hy chn phng n ng trong s cc phng n sau:A. A, C, D. B. A, B, D. C. B, C, D. D. A, B, C.2. Khi nhit tng ln 10 0C, tc ca mt phn ng ho hc tng ln 3 ln.Ngi ta ni rng tc phn ng ho hc trn c h s nhit bng 3. iukhng nh no sau y l ng?

A.Tc phn ng tng ln 256 ln khi nhit tng t 20 0C ln 50 0C.B.Tc phn ng tng ln 243 ln khi nhit tng t 20 0C ln 50 0C.C.Tc phn ng tng ln 27 ln khi nhit tng t 20 0C ln 50 0C.D.Tc phn ng tng ln 81 ln khi nhit tng t 20 0C ln 50 0C.3. H s nhit ca tc phn ng l gi tr no sau y? Bit rng khi

tng nhit ln thm 50 0C th tc phn ng tng ln 1024 ln.A. 2,0 B. 2,5 C. 3,0 D. 4,0

4. Hy cho bit ngi ta s dng yu t no trong s cc yu t sau tng tc phn ng trong trng hp rc men vo tinh bt c nu chn (cm, ng,khoai, sn) ru?

A. Nhit . B. Xc tc. C. Nng . D.p sut.5. Trong cc cp phn ng sau, cp no c tc phn ng ln nht?

A. Fe + ddHCl 0,1M. B. Fe + ddHCl 0,2M.C. Fe + ddHCl 0,3M D. Fe + ddHCl 20%, (d = 1,2g/ml)

6. S ph thuc ca tc phn ng ho hc vo nng c xc nh binh lut tc dng khi lng: tc phn ng ho hc t l thun vi tch snng ca cc cht phn ng vi lu tha bng h s t lng trong phong trnhho hC. V d i vi phn ng:

N2 + 3H 2 2NH3 Tc phn ng v c xc nh bi biu thc: v = k. [N 2].[H2]3. Hi tc phn ng s tng bao nhiu ln khi tng p sut chung ca h ln 2 ln? Tc phn ng s tng:

A. 4 ln B. 8 ln. C. 12 ln D.16 ln.7.Cho phng trnh ho hc

N2 (k) + O 2(k)tia lua dien

2NO (k); H > 0


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Hy cho bit nhng yu t no sau y nh hng n s chuyn dch cnbng ho hc trn?

A. Nhit v nng . B.p sut v nng .B. Nng v cht xc tc. D .Cht xc tc v nhit .

8.T th k XIX, ngi ta nhn ra rng trong thnh phn kh l cao (l luyngang) vn cn kh cacbon monoxit. Nguyn nhn no sau y l ng?

A. L xy cha cao. B .Thi gian tip xc ca CO v Fe 2O3 cha.C.Nhit cha cao. D .Phn ng ho hc thun nghch.

9.S tng tc gia hiro v iot c c tnh thun nghch:H2 + I 2 2HI

Sau mt thi gian phn ng, tc phn ng thun bng tc phnng nghch: v t = v n hay k t .[H2].[I2] = k n .[HI]2Sau khi bin i chng ta xy dng c biu thc hng s cn bng ca h(K cb).

K cb = kt

kn

=

Hi, nu nng ban u ca H 2 v I2 l 0,02mol/l, nng cn bngca HI l 0,03mol/l th nng cn bng ca H 2 v hng s cn bng l baonhiu?

A. 0,005 mol v 18. B. 0,005 mol v 36.C. 0,05 mol v 18. D. 0,05 mol v 36.

10.Cho phng trnh ho hc:

2N2(k) + 3H 2(k) p, xt

2NH3(k)Nu trng thi cn bng nng ca NH 3 l 0,30mol/l, ca N 2 l 0,05mol/l vca H 2 l 0,10mol/l. Hng s cn bng ca h l gi tr no sau y?

A. 36. B.360. C.3600. D.36000.11. Trong cng nghip, iu ch kh than t, ngi ta thi hi nc qua than ang nng . Phn ng ho hc xy ra nh sau

C (r) + H 2O (k) CO(k) + H2(k) H = 131kJiu khng nh no sau y l ng?

A. Tng p sut chung ca h lm cn bng khng thay i.B. Tng nhit ca h lm cn bng chuyn sang chiu thun.C. Dng cht xc tc lm cn bng chuyn sang chiu thun.D. Tng nng hiro lm cn bng chuyn sang chiu thun.

12. Clo tc dng vi nc theo phng trnh ho hc sau:

Cl2(k) + H 2O(l) HOCl + HClHai sn phm to ra u tan tt trong nc to thnh dung dch. Ngoi ramt lng ng k kh clo tan trong nc to thnh dung dch c mu vng lc nhtgi l nc clo. Hy chn l do sai : Nc clo dn dn b mt mu theo thi gian,khng bo qun c lu v:

A. clo l cht kh d bay ra khi dung dch.B. axit hipoclor (HOCl) l hp cht khng bn.C. hidroclorua (HCl) l cht kh d bay hi.D. phn ng ho hc trn l thun nghch.

13. Sn xut vi trong cng nghip v i sng u da trn phn ng hohc:

CaCO3(r)to

CaO(r) + CO2(k), H = 178kJ


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[H2].[I2]

[HI]2


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Hy chn phng n ng. Cn bng ho hc s chuyn sang chiu thunkhiA. tng nhit .B. p nh vi lm tng din tch tip xc.C. thi khng kh nn vo l lm gim nng kh cacbonic.D. c ba phng n A, B, C u ng.

14. Mt phn ng ho hc c dng:

2A(k) + B(k) 2C(k), H > oHy cho bit cc bin php cn tin hnh chuyn dch cn bng ho hcsang chiu thun?

A. Tng p sut chung ca h. B. Gim nhit .C. Dng cht xc tc thch hp. D. A, B u ng.

15.Cho cc phn ng ho hcC (r) + H 2O (k) CO(k) + H2(k); H = 131kJ2SO2(k) + O 2(k)

V2O5 2SO3(k); H = -192kJ Tm phng n sai trong s cc khng nh sau y ?Cc c im ging nhau ca hai phn ng ho hc trn l:A. To nhit. B. Thun nghch.C. u to thnh cc cht kh.D. u l cc phn ng oxi ho-kh.

16. Cho phn ng tng hp amoniac:

2N2(k) + 3H 2(k) p, xt

2NH3(k) Tc phn ng ho hc tng hp amoniac s tng bao nhiu ln nu tng nng hiro ln 2 ln?

A. 2 ln. B. 4 ln. C. 8 ln. D. 16 ln. Trong tt c cc trng hp trn, nhit ca phn ng c gi nguyn.

17. Ngi ta s dng nhit ca phn ng t chy than nung vi, Binphp k thut no sau y khng c s dng tng tc phn ng nungvi?

A.p nh vi vi kch thc khong 10cm.B. Tng nhit phn ng ln khong 900 0C.C. Tng nng kh cacbonic.D. Thi khng kh nn vo l nung vi.

18. Hnh v no sau y biu din trng thi cn bng ho hc?

v v v

A. B. C.t(thi gian)

19. Trong nhng khng nh sau, iu no l ph hp vi mt h ho hc trng thi cn bng?

A. Phn ng thun kt thc.B. Phn ng nghch kt thc.C.Tc ca phn ng thun v nghch bng nhau.D. Nng ca cc cht tham gia v to thnh sau phn ng nh nhau.

20. Cho phng trnh ho hc

CO(k) + Cl2(k) COCl2(k)


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Bit rng nng cn bng ca CO l 0,20mol/l v ca Cl 2 l 0,30mol/l v hngs cn bng l 4. Nng cn bng ca cht to thnh mt nhit no cu phn ng l gi tr no sau y?

A. 0,24 mol/l B. 0,024 mol/lC. 2,4 mol/l D. 0,0024 mol/l

21. Lm th no iu khin cc phn ng ho hc theo hng c li nht chocon ngi? Bin php no sau y c s dng?

A. Tng nhit v p sut.B. Chn cc iu kin nhit , p sut, nng sao cho cn bng hohc chuyn dch hon ton sang chiu thun.

C. Chn cc iu kin nhit , p sut, nng , xc tc sao cho va cli v tc v chuyn dch cn bng ho hc ca phn ng.

D. Chn cc iu kin nhit , p sut, nng , xc tc sao cho tc phn ng thun l ln nht.22. Phn ng t oxi ho- kh l phn ng trong :

A. C s tng v gim ng thi s oxi ho cc nguyn t ca cng mt nguynt.

B. C s nhng v nhn electron cc nguyn t ca cng mt nguyn t.C. Cht oxi ho v cht kh nm cng mt phn t.D. C s tng v gim ng thi s oxi ho cc nguyn t ca cng mt nguyn

t c cng s oxi ho ban u.23. Phn ng t oxi ho, t kh l:

A. NH4NO3 N2O + 2H 2OB. 2Al(NO3)3 Al2O3 + 6NO 2 + 3/2O 2C. Cl2 + 2NaOH NaCl + NaClOD. 2KMnO4 K 2MnO4 + MnO2 + O 2E. 10FeSO4 + 2KMnO4 + 8H 2SO4 5Fe2(SO4)3 + 2MnSO4 + K 2SO4 + 8H 2O

24. Cho cc phn ng oxi ho- kh sau:3I2 + 3H 2O HIO3 + 5HI (1)HgO 2Hg + O 2 (2)4K 2SO3 3K 2SO4 + K 2S (3)NH4NO3 N2O + 2H 2O (4)2KClO3 2KCl + 3O2 (5)3NO2 + H 2O 2HNO3 + NO (6)4HClO4 2Cl2 + 7O 2 + 2H 2O (7)2H2O2 2H2O + O 2 (8)

Trong s cc phn ng oxi ho- kh trn, s phn ng oxi ho- kh ni phn t lA. 2 B. 3 C. 4 D. 5

25. Cho cc phn ng oxi ho- kh sau:3K 2MnO4 + 2H 2O MnO2 + 2KMnO4+ 4KOH (1)4HCl+MnO2 MnCl2 + Cl2 + 2H 2O (2)4KClO3 KCl + 3KClO4 (3)3HNO2 HNO3 + 2NO + H 2O (4)4K 2SO3 2K 2SO4 + 2K 2S (5)2AgNO3 2Ag + 2NO 2 + O 2 (6)2S + 6KOH 2K 2S + K 2SO3 + 3H 2O (7)2KMnO4 +16 HCl 5Cl2 + 2KCl + 2MnCl2 + 8H 2O (8)

Trong cc phn ng oxi ho- kh trn s phn ng t oxi ho, t kh l:A. 2 B. 3 C. 4 D. 5

26. Cc cht no sau y u tc dng vi dung dch Fe(NO 3)3?A. Mg, Fe, Cu. B. Al, Fe, Ag.


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C. Ni, Zn, Fe D. C A v C u ng.27. Trong phn ng:

3NO2 + H 2O 2HNO3 + NOKh NO2 ng vai tr no sau y?

A. Cht oxi ho. B. Cht kh.C. L cht oxi ho nhng ng thi cng l cht kh.D. Khng l cht oxi ho cng khng l cht kh.

28. Cho cc phn ng sau:Cl2 + H 2O HCl +HClOCl2 + 2NaOH NaClO + H2O + NaCl3Cl2+ 6NaOH 5NaCl +NaClO3 + 3H 2O2Cl2 + H 2O +HgO HgCl2+2HClO2Cl2 + HgO HgCl2 + Cl2O

Trong cc phn ng trn clo ng vai tr l cht g?A. L cht oxi ho. B. L cht kh.C. Va l cht oxi ho, va l cht kh. D. A, B, C u ng

29. Trong cc phn ng sau, phn ng no HCl ng vai tr l cht oxi ho?

A. 4HCl + MnO2 MnCl2 + Cl2 + 2H 2OB. 4HCl +2Cu + O 2 2CuCl2 + 2H 2OC. 2HCl + Fe FeCl2 + H 2D. 16HCl + 2 KMnO4 2MnCl2 + 5Cl 2 +8 H 2O + 2KCl

30. Khi cho Zn vo dung dch HNO 3 thu c hn hp kh A gm N 2O v N2 khiphn ng kt thc cho thm NaOH vo li thy gii phng kh B, hn hp kh B l:

A. H2, NO2 . B. H2, NH3. C. N2, N2O. D. NO, NO231. Phn ng oxi ho kh xy ra khi to thnh

A. Cht t tan to kt ta. B. Cht t in li.

C. Cht oxi ho v cht kh yu hn. D. Cht d bay hi.32. Ho tan hon ton m gam Fe xOy bng dung dch H 2SO4 c nng thu ckh A v dung dch B. Cho kh A hp th hon ton bi dung dch NaOH d to ra12,6 gam mui. Mt khc, c cn dung dch B th thu c 120 gam mui khan.Cng thc ca st oxit Fe xOy l:

A. FeO B. Fe3O4 C. Fe2O3 D. Tt c u sai

33. Cho KI tc dng vi KMnO4 trong mi trng H 2SO4, ngi ta thu c 1,51gMnSO4 theo phng trnh phn ng sau:10KI + 2KMnO4 + 8H 2SO4 6K 2SO4 + 5I 2 + 2MnSO4 + 8 H 2OS mol iot to thnh v KI tham gia phn ng trn l:

A. 0,00025 v 0,0005 B. 0,025 v 0,05. C.0,25 v 0,50. D.0,0025 v0,00534. Hy chn phng n ng. Phn ng oxi ho - kh xy ra hay khng trong cctrng hp sau y? ng c th tc dng vi

A. dung dch mui st II to thnh mui ng II v gii phng st.B. dung dch mui st III to thnh mui ng II v gii phng st.C. dung dch mui st III to thnh mui ng II v mui st II.D. khng th tc dng vi dung dch mui st III.

35. m gam phoi bo st ( A) ngoi khng kh, sau mt thi gian bin thnhhn hp ( B) c khi lng 12 gam gm st v cc oxit FeO, Fe 3O4, Fe 2O3. cho B tc

dng hon ton vi dung dch HNO 3 thy gii phng ra 2,24 lt kh NO duy nht(ktc ).Khi lng tnh theo gam ca m l:A. 11,8. B. 10,08 C. 9,8 D. 8,8


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36. Cho cc cht sau: NH 3, HCl, SO3, N2. Chng c kiu lin kt ho hc no sauy?

A. Lin kt cng ho tr phn cc. B. Lin kt cng ho tr khng phncc.

C. Lin kt cng ho tr. D. Lin kt phi tr37. Nhng 1 thanh nhm nng 50g vo 400ml dung dch CuSO 4 0,5M. Sau mtthi gian ly thanh nhm ra cn nng 51,38g. Hi khi lng Cu thot ra l bao

nhiu?A. 0,64g B. 1,28g C. 1,92g D. 2,56.38. Ha tan 4,59g Al bng dung dch HNO 3 thu c hn hp kh NO v N 2O c tkhi hi i vi hiro bng 16,75. Th tch NO v N 2O thu c ktc l:

A. 2,24 lt v 6,72 lt. B. 2,016 lt v 0,672 lt.C. 0,672 lt v 2,016 lt. D. 1,972 lt v 0,448 lt.

39. Phn ng t oxi ho - t kh l phn ng ho hc trong A. C s tng, gim ng thi s oxi ho cc nguyn t ca cng mt nguyn

tB. C s nhng v nhn electron cc nguyn t ca cng mt nguyn t.C. Cht oxi ho v cht kh nm cng mt phn t.D. C s tng v gim ng thi s oxi ho cc nguyn t ca cng mt

nguyn t c cng s oxi ho ban u.40. Cho cc cp oxi ho kh sau: Fe 2+ /Fe ; Cu2+ /Cu ; Fe3+ /Fe2+ . T tri sang phitnh oxi ho tng dn theo th t Fe 2+ , Cu2+ , Fe3+ , tnh kh gim dn theo th tFe, Cu, Fe 2+ . iu khng nh no sau y l ng?

A. Fe c kh nng tan c trong cc dung dch FeCl 3 v CuCl2.B. ng c kh nng tan trong cc dung dch FeCl 3 v FeCl2.C. Fe khng tan c trong cc dung dch FeCl 3 v CuCl2.D. ng c kh nng tan trong cc dung dch FeCl 2.

41. Ho tan hon ton m gam Fe 3O4 vo dung dch HNO 3 long d, tt c lng kh

NO thu c em oxi ho thnh NO 2 ri sc vo nc cng dng kh O 2 chuynht thnh HNO3. Cho bit th tch kh oxi (ktc) tham gia qu trnh trn l3,36 lit. Khi lng m ca Fe 3O4 l gi tr no sau y?

A. 139,2 gam. B. 13,92 gam. C. 1,392 gam D. 1392 gam.42. Vai tr ca kim loi v ion kim loi trong cc phn ng oxi ho - kh m chngtham gia l:

A. Cht kh. B. Cht oxi ho.C. Va l cht kh va c th l cht oxi ho.D. Kim loi ch l cht kh, ion kim loi c th l cht kh hay cht oxi ho.

43. Ho tan hon ton hn hp FeS v FeCO 3 bng dung dch HNO 3 c nngthu c hn hp kh A gm hai kh X, Y c t khi so vi hiro bng 22,805. Cngthc ho hc ca X v Y theo th t l:A. H2S v CO2. B. SO2 v CO2. C. NO2 v CO2 D. NO2 v SO244. A l dung dch cha 2 cht tan l HCl v CuSO 4 c pH = 1. Cho t t dungdch NaOH 1M vo 100ml dung dch A n khi lng kt ta sinh ra bt ukhng i th dng ht 250 ml. Nng M ca cc cht tan trong A ln lt l:

A. 0,01M v 0,24M. B. 0,1M v 0,24M.C. 0,01M v 2,4M. D. 0,1M v 1,2M.

45. Ho tan hon ton oxit Fe xOy (A) trong dung dch H 2SO4 c nng thu cdung dch A 1 v kh B1. Mt khc li cho dung dch A 1 tc dng vi NaOH d lctch kt ta ri nung n khi lng khng i c cht rn A 2. Cng thc hohc ca A 1, A2 v kh B1 ln lt nh sau:

A. Fe2(SO4)3, FeO v SO2. B. Fe2(SO4)3, Fe3O4 v SO2.C. Fe2(SO4)3, Fe2O3 v SO2. D. FeSO4, Fe2O3 v SO2.

46. Ha tan hon ton 28,8 g kim loi Cu vo dung dch HNO 3long, tt c kh


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NO thu c em oxi ha thnh NO 2 ri sc vo nc c dng oxi chuyn htthnh HNO3. Th tch kh oxi ktc tham gia vo qu trnh trn l:

A . 100,8 lt B. 10,08lt C . 50,4 lt D. 5,04 lt47. Cho s chuyn ho

X1 + 2)(OHCa Y C0900 CO2 + X

A + HC l B + 42S ONa D + Cht X c th l mt trong cc cht no sau y?A. CaCO3 B. BaSO3 C. BaCO3 D. MgCO348.. Ho tan 7,8g hn hp bt Al v Mg trong dung dch HCl d. Sau phn ng khilng dung dch axit tng thm 7,0g. Khi lng nhm v magie trong hn hp ul:

A. 2,7g v 1,2g B. 5,4g v 2,4g C. 5,8g v 3,6g D. 1,2g v 2,4g

49. Cho cc phng trnh ho hc sau y:A. Al4C3 + 12H 2O 4Al(OH)3 + 3CH4B. 2Na + 2H 2O 2NaOH + H2

C. C2H2 + H 2O

+2 H g

CH3CHOD. C2H5Cl + H2O O H C2H5OH + HClE. NaH + H2O NaOH + H2F. 2F2 + 2H 2O 4HF + O2

C bao nhiu phn ng ho hc trong s cc phn ng trn, trong H 2O ngvai tr cht oxi ha hay cht kh?

A. 1 B. 2 C. 3 D. 450. Kim loi no sau y c th iu ch theo phng php in phn nngchy oxit:

A. Fe B. Cu C. Al D. Ag51. Nhng mt thanh Mg c khi lng m vo mt dung dch cha 2 mui FeCl 3 vFeCl2. Sau mt thi gian ly thanh Mg ra cn li thy c khi lng m < m. Vytrong dung dch cn li c cha cc cation no sau y?

A. Mg2+ B. Mg2+ v Fe2+ C. Mg2+ , Fe2+ v Fe3+ D. C B v C u ng

52. Dung dch FeCl 3 c pH l:A. < 7 B. = 7 C. > 7 D. 7

53. Kim loi no sau y c phn ng vi dung dch CuSO 4?A. Mg, Al, Ag B. Fe, Mg, Na C. Ba, Zn, Hg D. Na, Hg, Ni

54. Thi V lt kh CO2 iu kin tiu chun vo dung dch cha 0,2 mol

Ca(OH)2 th thu c 2,5g kt tA. Gi tr ca V l:A. 0,56 lt. B. 8,4 lt. C. 1,12 lt. D. C A v B u ng.

55. C kh CO2 ln tp cht l SO 2. loi b tp cht th c th sc hn hp khvo trong dung dch no sau y?

A. Dung dch nc brom d. B. Dung dch Ba(OH) 2 d.C. Dung dch Ca(OH) 2 d. D. Dung dch NaOH d.

56. Cc cht no trong dy sau y va tc dng vi dung dch kim mnh, vatc dng vi dung dch axit mnh?

A. Al(OH)3, (NH2)2CO, NH4Cl. B. NaHCO3, Zn(OH)2, CH3COONH4.C. Ba(OH)2, AlCl3, ZnO. D. Mg(HCO3)2, FeO, KOH.

57. Khi ly 14,25g mui clorua ca mt kim loi M ch c ho tr II v mt lngmui nitrat ca M vi s mol nh nhau, th thy khi lng khc nhau l 7,95g. Cngthc ca 2 mui l:


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A. CuCl2, Cu(NO3)2 B. FeCl2, Fe(NO3)2 C. MgCl2, Mg(NO3)2 D. CaCl2, Ca(NO3)258. Ho tan hon ton hn hp gm 0,05 mol Ag v 0,03 mol Cu vo dung dchHNO3 thu c hn hp kh A gm NO v NO 2 c t l s mol tng ng l 2 : 3.

Th tch hn hp A ktc l:A. 1,368 lt. B. 2,737 lt. C. 2,224 lt.

D. 3,3737 lt.59. Trn 0,54 g bt nhm vi bt Fe 2O3 v CuO ri tin hnh phn ng nhit

nhm thu c hn hp A. Ho tan hon ton A trong dung dch HNO 3 c hn hpkh gm NO v NO2 c t l s mol tng ng l 1 : 3. Th tch (ktc) kh NO vNO2 ln lt l:

A. 0,224 lt v 0,672 lt. B. 0,672 lt v 0,224 lt.C. 2,24 lt v 6,72 lt. D. 6,72 lt v 2,24 lt.

60. Ho tan hon ton mt lng bt st vo dung dch HNO 3 long thu c hnhp kh gm 0,015 mol N 2O v 0,01 mol NO. Lng st ho tan l:

A. 0,56g B. 0,84g C. 2,8g D. 1,4g61. Cho hn hp gm FeO, CuO, Fe 3O4 c s mol ba cht u bng nhau tc dnght vi dung dch HNO 3 thu c hn hp kh gm 0,09 mol NO 2 v 0,05 mol NO.S mol ca mi cht l:

A. 0,12 mol. B. 0,24 mol. C. 0,21 mol. D. 0,36 mol.62. C cc dung dch AlCl 3, NaCl, MgCl2, H2SO4. Ch c dng thm mt thucth, th c th dng thm thuc th no sau y nhn bit cc dung dch?

A. Dung dch NaOH. B. Dung dch AgNO3.C. Dung dch BaCl2. D. Dung dch qu tm.

63. in phn dung dch CuSO 4 vi anot bng ng nhn thy mu xanh cadung dch khng i. Chn mt trong cc l do sau:

A. S in phn khng xy ra. B. Thc cht l in phn nc.C. ng va to ra catot li tan ngay.

D. Lng ng bm vo catot bng lng tan ra anot nh in phn.64. in phn dung dch cha 0,2 mol FeSO 4 v 0,06mol HCl vi dng in 1,34A trong 2 gi (in cc tr, c mng ngn). B qua s ho tan ca clo trong ncv coi hiu sut in phn l 100%. Khi lng kim loi thot ra katot v thtch kh thot ra anot (ktc) ln lt l:

A. 1,12 gam Fe v 0,896 lit hn hp kh Cl 2 v O2.B. 1,12 gam Fe v 1,12 lit hn hp kh Cl 2 v O2.C. 11,2 gam Fe v 1,12 lit hn hp kh Cl 2 v O2.D. 1,12 gam Fe v 8,96 lit hn hp kh Cl 2 v O2.

65. Cho cc anion: Cl -, Br-, S2-, I-, OH- Th t oxi ho ca cc anion anot tr nosau y l ng?

A. Cl-, Br-, S2-, I-, OH- . B. S2-, Cl-, I-, Br,- OH- .C. S2-, I-, Br-, Cl-, OH- . D. S2-, I-, Br- , OH-, Cl- .

C. hUng dn tr li, p s

1. B 2. C 3. D 4. B 5. D 6. D7. A 8. D 9. B 10. D 11. A12 D 13. D 14. D 15. A 16 C 17. C


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18. C 19. C 20. A 21. C 22. D 23. C24. B 25. D 26. D 27. C 28. C 29. C30. B 31. C 32. B 33. B 34 C 35. B36. C 37. C 38. B 39. D 40 A 41. A42. D 43. C 44. D 45. C 46. D 47. C48. B 49. C 50. C 51. D 52. A 53. B54. D 55. A 56. B 57. C 58. A 59 A60. C 61. A 62. A 63. D 64, A 65. C


Bi s 3(Thi gian lm bi : 68 x 1,8 pht/ 1cu = 120pht)

H Ni, Ngy 25 thng 02 nm 2009Vn 3

S in li - phn ng gia cc ion trong dung dch pH1. Theo Ahreniut th kt lun no sau y l ng?

A. Baz l cht nhn proton.B. Axit l cht nhng proton.C. Axit l cht khi tan trong nc phn li ra cation H+ .D. Baz l hp cht trong thnh phn phn t c mt hay nhiu nhm OH.

2. Chn cc cht l hiroxit lng tnh trong s cc hiroxit sau:A. Zn(OH)2. B. Sn(OH)2. C. Fe(OH)3. D. C A, B

3. Ch ra cu tr li sai v pH:A. pH = - lg[H+] B. [H+] = 10a th pH = a C. pH + pOH = 14 D. [H+].[OH-] = 10-14

4. Chn cu tr li ng, khi ni v mui axit:A. Dung dch mui c pH < 7. B. Mui c kh nng phn ng vi baz.C. Mui vn cn hiro trong phn t. D. Mui vn cn hiro c kh nng phn li to protontrong nc.

5. Chn cu tr li ng v mui trung ho:A. Mui c pH = 7. B. Mui to bi axit mnh v baz mnh .C. Mui khng cn c hiro trong phn t .D. Mui khng cn hiro c kh nng phn li to proton trong nc.

6. Hy chn cu tr li ng: Phn ng trao i trong dung dch cc cht in li ch c th xy rac t nht mt trong cc iu kin sau:

A. to thnh cht kt ta. B. to thnh cht kh .C. to thnh cht in li yu. D. hoc A, hoc B, hoc C.

7. Trong cc cht sau cht no l cht t in li?A. H2O B. HCl C. NaOH D. NaCl

8. Nc ng vai tr g trong qu trnh in li cc cht trong nc?A. Mi trng in li. B. Dung mi khng phn cc.C. Dung mi phn cc. D. To lin kt hiro vi cc cht tan.

9. Chn nhng cht in li mnh trong s cc cht sau:

a. NaCl b. Ba(OH)2 c. HNO3 d. AgCl e. Cu(OH)2 f. HClA. a, b, c, f. B. a, d, e, f. C. b, c, d, e. D. a, b, c.10. Hy chn cu tr li ng trong s cc cu sau:


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A. axit m mt phn t phn li nhiu H+ l axit nhiu nc.B. axit m phn t c bao nhiu nguyn t H th phn li ra by nhiu H+.C. H3PO4 l axit ba nc .D. A v C ng.

11. Chn cu tr li ng nht, khi xt v Zn(OH)2 l:A. cht lng tnh. B. hiroxit lng tnh.C. baz lng tnh. D. hiroxit trung ha.

12. Dy cc cht no sau y va tc dng vi dung dch HCl va tc dng vi dung dch NaOH?A. Pb(OH)2, ZnO, Fe2O3 B. Al(OH)3, Al2O3, Na2CO3C. Na2SO4, HNO3, Al2O3 D. NaCl, ZnO, Zn(OH)2

13. Cho phng trnh ion thu gn: H+ + OH- H2O. Phng trnh ion thu gn cho biu din bncht ca cc phn ng ho hc no sau y?A. HCl + NaOH H2O + NaCl B. NaOH + NaHCO3 H2O + Na2CO3C. H2SO4 + BaCl2 2HCl + BaSO4 D. A v B ng.14. Cu no sau y ng khi ni v s in ly?

A. S in ly l s ho tan mt cht vo nc thnh dung dch.B. S in ly l s phn ly mt cht di tc dng ca dng in.C. S in ly l s phn ly mt cht thnh ion dng v ion m khi cht tan trong nc

trng thi nng chy.D. S in ly thc cht l qu trnh oxi ho kh.

15. Cho 10,6g Na2CO3 vo 12g dung dch H2SO4 98%, s thu c bao nhiu gam dung dch? Nu ccn dung dch sau phn ng s thu c bao nhiu gam cht rn?A. 18,2g v 14,2g B. 18,2g v 16,16g C. 22,6g v 16,16g D. 7,1g v 9,1g16. Trong dung dch Al2(SO4)3 long c cha 0,6 mol SO42-, th trong dung dch c cha:A. 0,2 mol Al2(SO4)3. B. 0,4 mol Al3+ .C. 1,8 mol Al2(SO4)3. D. C A v B u ng.17. Trong cc cp cht sau y, cp cht no cng tn ti trong dung dch?A. AlCl3 v Na2CO3. B. HNO3 v NaHCO3. C. NaAlO2 v KOH. D. NaCl v AgNO3.18. C bn l ng bn dung dch mt nhn l: AlCl3, NaNO3, K 2CO3, NH4 NO3. Nu ch c php

dng mt cht lm thuc th th c th chn cht no trong cc cht sau?A. Dung dch NaOH B. Dung dch H2SO4 C. Dung dch Ba(OH)2 D. Dung dch AgNO319. Cc cht no trong dy sau y va tc dng vi dung dch kim mnh, va tc dng vi ddch axit mnh?

A. Al(OH)3, (NH2)2CO, NH4Cl. B. NaHCO3, Zn(OH)2, CH3COONH4.C. Ba(OH)2, AlCl3, ZnO. D. Mg(HCO3)2, FeO, KOH.

20. Cho cc cht rn sau: Al2O3 ZnO, NaOH, Al, Zn, Na2O, Pb(OH)2, K 2O, CaO, Be, Ba. Dy cht rnc th tan ht trong dung dch KOH d l:A. Al, Zn, Be. B. Al2O3, ZnO. C. ZnO, Pb(OH)2, Al2O3. D. Al, Zn, Be, Al2O3, ZnO.21. Cho 200 ml dung dch KOH vo 200 ml dung dch AlCl3 1M thu c 7,8g kt ta keo. Nng mol ca dung dch KOH l:A. 1,5 mol/l. B. 3,5 mol/l. C. 1,5 mol/l v 3,5 mol/l. D. 2 mol/l v 3 mol/l.22. Trn ln 100 ml dung dch KOH 1M vi 50 ml dung dch H3PO4 1M th nng mol ca mui

trong dung dch thu c l:A. 0,33M. B. 0,66M. C. 0,44M. D. 1,1M.

23. Lng SO3 cn thm vo dung dch H2SO4 10% c 100g dung dch H2SO4 20% l:A. 2,5g B. 8,88g C. 6,66g D. 24,5g

24. Khi lng dung dch KOH 8% cn ly cho tc dng vi 47g K 2O thu c dung dch KOH21% l:A. 354,85g B. 250 g C. 320g D. 400g

25. Cho 10 ml dung dch hn hp HCl 1M v H2SO4 0,5M. Th tch dung dch NaOH 1M cn

trung ho dung dch axit cho l:A. 10ml. B. 15ml. C. 20ml. D. 25ml.


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26. Cho H2SO4 c tc dng vi 58,5g NaCl v dn ht kh sinh ra vo 146g H2O. Nng % caaxit thu c l:

A. 30 B. 20 C. 50 D. 2527 . Trn 200ml dung dch HCl 1M vi 300 ml dung dch HCl 2M. Nu s pha trn khng lm

gin th tch th dung dch mi c nng mol l:A. 1,5M B. 1,2M C. 1,6M D. 0,15M

28. Trn 20ml dung dch HCl 0,05M vi 20ml dung dch H2SO4 0,075M. Nu coi th tch sau khi pha

trn bng tng th tch ca hai dung dch u th pH ca dung dch thu c l:A 1 B. 2 C. 3 D. 1,529. C 10ml dung dch axit HCl c pH = 3. Cn thm bao nhiu ml nc ct thu c dung

axit c pH = 4?A. 90ml B. 100ml C. 10ml D. 40ml

30. Th tch dung dch HCl 0,3M cn trung ho 100ml dung dch hn hp NaOH 0,1M Ba(OH)2 0,1M l:

A. 100ml. B. 150ml C. 200ml D. 250ml 31 .Cht no sau y khng dn in c ?

A.NaCl rn khan B.NaOH nng chyC. KCl nng chy D.HBr trong dung mi nc

32 .Cht no sau y khng phn li ra in khi ha tan vo nc?A.ZnSO4 B.C2H5OH C.HClO4 D.KOH33 .Dung dch cht no sau y dn c in?

A.C2H5OH trong nc B.Glixerol trong ncC.C6H12O6 trong nc D.CH3COONa trong nc

34 .Mt dung dch c cha a mol +3 Al , b mol +2 Zn , c mol Cl , d mol 24SO .H thc lin h giaa,b,c,d c xc nh l:

A.3a + 2b = c + 2d B.a + b =c+ dC.3a + c = 2b + 2d D.3a + 2d =2b + c

35 .Mt dung dch c cha 0,2 mol +3 Fe , 0,1 mol +2 Zn , x mol Cl , y mol 24SO .Bit rng khi c

cn dung dch thu 48,6 g cht rn khan ,hi gi tr ca x,y bng bao nhiu?A.0,1 v 0,6 B.0,6 v 0,1 C.0,2 v 0,1 D.0,1 v 0,236 .Nng mol ca +3 Al v 24SO trong dung dch Al2(SO4)3 0,1 M ln lt l:A.0,1 M v 0,1 M B.0,2 M v 0,3M C.0,3M v 0,2M D.Kt qu khc37 .Cn bng sau tn ti trong dung dch: CH3COOH + H + -3 OCOCH in li ca CH3COOH s bin i nh th no khi nh vo dung dch trn vi git HCl?

A. Tng dn B..Gim dnC.Khng thay i D.Lc u tng sau gim

38 .Nng mol ca CH3COOH v + H trong dung dch CH3COOH 0,1 M l bao nhiu ? Bit in li ca CH3COOH bng 1,32%

A.9,868 .10-2

M v 0,132.10-2

M B.0,132 .10-2

M v 9,868 .10-2

MC.0,1 M v 1,32 .10-3M D.Kt qu khc39 .Trong dung dch CH3COOH 0,01 M c [ + H ]= 4,11 .10-4M. in li ca CH3COOH nng bng bao nhiu?

A.2% B.4,11 .10-4% C.4,11 % D.1,32%40 .Dung dch CH3COOH 0,043 M c in li l 2%.pH ca dung dch bng bao nhiu?

A.8,6 .10-4 B.2 C.4 D.3,06641 .Theo Bronstt th kt lun no sau y ng ?

A.Axt hoc baz ch c th l phn t ,khng phi l ionB.Trong thnh phn ca axt c th khng c HiroC.Trong thnh phn ca baz phi c nhm (OH)D.Axt l cht nhng proton, baz l cht nhn proton.

42 .Nng mol ca ion OH trong dung dch NH3 0,1 M (K b = 1,8 .10-5) l bao nhiu?A. 0,1 M B.1,33 .10-3 M C.1,8 .10-5 D.0,01 M


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43 .Nng mol ca ion + H trong dung dch CH3COOH 0,1 M (K a = 1,75 .10-5) l bao nhiu?A. 0,1 M B.1,75 .10-5 M C.1,31 .10-3 M D.0,02 M44 .Trong cc phn t v ion sau cht no l cht lng tnh theo Bronstt : HI , -3 OCOCH ,

42 PO H , 34 PO , 3 NH , 2S , 24 HPO .

A. HI , -3 OCOCH , 42 PO H B. 34 PO , 3 NH C. 2S , 24 HPO D. 42 PO H , 24 HPO .

45 .Mt dung dch cha x mol + Na ,y mol +2Ca ,z mol 3 HCO ,t mol Cl .H thc lin h giax,y,z,t c xc nh l:A.x +2y =z + t B.x + 2y = z + 2t C.x + 2z = y + 2t D. z+ 2x = y +t46 .Cht no sau y khi cho vo nc khng lm thay i pH ca dung dch.

A.Na2CO3 B.NH4Cl C.HCl D.KCl47 .Nh vi git phenolphthalein vo dung dch Na2CO3.Cho bit dung dch c mu g?A.Mu xanh B.Mu hng C.Khng mu D.Mu trng48 .Dung dch ca cc mui no sau y c pH < 7?

A. NaCl , 42 SO K , 32 CO Na B. 2 ZnCl , Cl NH 4C. 32 CO Na , 2 ZnCl D. 2 ZnCl , Cl NH 4 , ONa3 COCH

49 .Trn ln 25 ml dung dch HCl 0,1M v 10 ml dung dch NaOH 0,15 M c dung dch A.pH cdung dch ny bng bao nhiu ?A.3 B. 2,39 C.2,48 D.1,54

50 .Th tch dung dch KOH 0,1M pha 1,5 lt dung dch Na2CO3.Dung dch thu c c mu g?A.1,5 ml B.2 ml C.10 ml D.15 ml51 .Cho cc axt sau (1) H3PO4( K a=7,6 .10-3) , (2) HOCl ( K a =5.10-8) , (3) CH3COOH ( K a=1,8 .10-5) ,(4) H2SO4 ( K a=10-2).Sp xp mnh ca cc axt theo th t tng dn.A.1 < 2 < 3 < 4 B.4


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A. pH=7 B.pH < 7 C.pH >7 D.Ph thuc vo a.61 .Cn bao nhiu gam NaOH rn pha ch c 500ml dung dch NaOH c pH = 12?

A.0,4 g B.0,1g C.0,2g D.2g62 .Dung dch thu c khi trn ln 200ml dung dch NaCl 0,2M vi 300ml dung dch Na2SO4 0,2Mc nng mol ca in + Na l:

A.0,16M B.0,23M C.0,61M D.0,32M63 .Ha tan 12,5 g CuSO4.5H2O vo mt lng nc va to thnh 200ml dung dch .Vy nn

mol ca CuSO4 trong dung dch thu c l:A.0,25M B.0,5M C.0,4M D.0,75M64 .Ha tan m (g) hn hp A gm Fe v kim loi M (c ha tr khng i ) trong dung dch HCl .Sakhi hai kim loi tan ht thu 8,96 lt kh ktc v dung dch B.C cn dung dch B thu c 39,6mui khan .Gi tr ca m l:

A.11,2g B.1,11g C.11,0g D.0,11g65 .Cho 115g hn hp gm ACO3, B2CO3 v R 2CO3 tc dng ht vi dung dch HCl thy thot ra 22,4lt kh CO2 ( ktc).Vy khi lng mui clorua to ra trong dung dch l:A.162g B.126g C.132g D.123g66 .Dung dch CH3COONa c pH l :A. pH =7 B. pH >7 C.pH< 7 D.Khng xc nh c67 .Theo phng trnh in thu gn th ion 23CO khng th phn ng c vi cc in no sau y:

A. +4 NH , + Na , + K B. +2Ca , +2Mg , + H C. +2 Ba , +2Sr , +2 Zn D. C A,B, C u ng

68 . Mt dung dch A gm 0,03 mol +2Ca ; 0,06 mol +3 Al ; 0,06 mol 3 NO ;0,09 mol 24SO . Munc dung dch A cn phi ha tan hai mui no sau y:

A. CaSO4 v Al(NO3)3 B. Ca(NO3)2v Al2(SO4)3 C. C A v B u ng D. C A v B u sai


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Bi s 4(Thi gian lm bi : 165 x 1,8 pht/ 1cu = 300 pht)


Vn 4 -Phi kim

( 2)


Bi s 1(Thi gian lm bi : x 1,8 pht/ 1cu = pht)


Vn 5

(2 cu)


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I CNG KIM LOI

1. Nhn nh no khng ng v v tr ca kim loi trong bng tun hon:A. Tr Hidro (nhm IA), bo (nhm IIIA), tt c cc nguyn t nhm IA, IIA, IIIA u

l kim loi.B. Tt c cc nguyn t nhm B (t IB n VIIIB).C. Tt c cc nguyn t h Lantan v Actini.D. Mt phn cc nguyn t pha trn ca cc nhm IVA, VA v VIA.

2. Trong 110 nguyn t bit, c ti gn 90 nguyn t l kim loi. Cc nguyn t kimloi c cu hnh electron lp ngoi cng l

A. bo ho. B. gn bo ho.C. t electron. D. nhiu electron.

3. Kim loi c nhng tnh cht vt l chung no sau y?A. Tnh do, tnh dn in, tnh cng.B. Tnh dn in, tnh dn nhit, tnh do, c nh kim.C. Tnh do, tnh dn in, nhit nng chy cao.D. C nh kim, tnh dn in, c khi lng ring nh.

4. Cho cc kim loi sau: Au, Al, Cu, Ag, Fe. Dy gm cc kim loi c sp xp theochiu tng dn tnh dn in ca cc kim loi trn l

A. Fe, Cu, Al, Ag, Au. B. Cu, Fe, Al, Au, Ag.C. Fe, Al, Au, Cu, Ag. D. Au, Fe, Cu, Al, Ag.

5. Trc y, ngi ta thng dng nhng tm gng soi bng Cu v Cu l kim loiA. c tnh do.B. c tnh dn nhit tt.C. c kh nng phn x tt nh sng.D. km hot ng, c tnh kh yu.

6. Cho cc kim loi: Al, Au, Ag, Cu. Kim loi do nht (d dt mng, ko di nht) lA. Al. B. Cu.C. Au. D. Ag.

7. Kim loi c nhit nng chy cao nht dng lm dy tc bng n lA. Au. B. Pt.C. Cr. D. W.

8. Dy so snh tnh cht vt l ca kim loi no di y l khng ng:A. Nhit nng chy: Hg < Al < W.B. Tnh dn in v nhit: Fe < Al < Au < Cu < Ag.C. Tnh cng: Cs < Fe < W < Cr.D. Tnh do: Al < Au < Ag.

9. Tnh cht vt l no di y ca kim loi khng phi do cc electron t do trong kim

loi gy ra?A. Tnh cng. B. Tnh do.C. Tnh dn in v nhit. D. nh kim.


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10.

Tnh cht vt l no sau y ca kim loi do electron t do trong kim loi gy ra?A. Nhit nng chy. B. Khi lng ring.C. Tnh do. D. Tnh cng.

11.

Lin kt kim loi l lin kt c hnh thnh doA. cc i electron dng chung gia 2 nguyn t.B. s nhng cp electron cha tham gia lin kt ca nguyn t ny cho nguyn

t kia to thnh lin kt gia 2 nguyn t.C. lc ht tnh in gia ion dng v ion m.D. lc ht tnh in gia cc eletron t do v ion dng, kt dnh cc ion dng

kim loi vi nhau.12.

Cho cc kiu mng tinh th sau: (1) lp phng tm khi; (2) lp phng tm din;(3) t din u; (4) lc phng. a s cc kim loi c cu to theo 3 kiu mng tinh th l

A. (1), (2), (3). B. (1), (2), (4).C. (2), (3), (4). D. (1), (3), (4).

13.

Kt lun no sau y khng ng v hp kim?A. Tnh cht ca hp kim ph thuc vo thnh phn ca cc n cht tham gia

hp kim v cu to mng tinh th ca hp kim.B. Hp kim l vt liu kim loi c cha thm 1 hay nhiu nguyn t (kim loi hoc

phi kim).C. Thp l hp kim ca Fe v C.D. Nhn chung hp kim c nhng tnh cht ha hc khc tnh cht ca cc cht

tham gia to thnh hp kim.14.

Nhn nh no sau y khng ng v hp kim?A. Trong tinh th hp kim c lin kt kim loi do hp kim c nhng tnh cht ca

kim loi nh: dn in, dn nhit, nh kim.B. Hp kim dn in v dn nhit km hn kim loi nguyn cht do nhng nguyn

t kim loi thnh phn c bn knh khc nhau lm bin dng mng tinh th, cntr s di chuyn t do ca cc electron.

C. cng ca hp kim ln hn kim loi thnh phn.D. Nhit nng chy ca hp kim cao hn nhit nng chy ca cc kim loi

thnh phn.15

.

Tnh cht ha hc c trng ca kim loi l

A. b oxi ha.B. tnh oxi ha.C. b kh.D. va th hin tnh oxi ho va th hin tnh kh.

16.

Nguyn t kim loi c xu hng no sau y?A. Nhng eletron to thnh ion m.B. Nhng electron to thnh ion dng.C .Nhn electron to thnh ion m.D. Nhn electron to thnh ion dng.

17.

Tnh cht c trng ca kim loi l tnh kh (d b oxi ho thnh ion dng) vA. nguyn t kim loi thng c 5, 6, 7 electron lp ngoi cng.


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B. nguyn t kim loi c nng lng ion ho nh.C. kim loi c xu hng thu thm electron t cu hnh ca kh him.D. nguyn t kim loi c m in ln.

18.

Cho phn ng ha hc: 4 4Mg +CuSO MgSO + Cu Qu trnh no di y biu th s oxi ha ca phn ng trn:

A .2+

Mg +2e Mg B .2+

Mg Mg +2e C. 2+Cu +2e Cu D. 2+Cu Cu +2e

19.

Ngm mt l Zn nh trong mt dung dch cha 2,24 gam ion kim loi c in tch +2(M2+). Khi phn ng xy ra hon ton thy khi lng l Zn tng thm 0,94 gam. M l

A .Fe. B .Pb.C .Cd. D. Mg.

20.

Cho a gam hn hp bt cc kim loi Ni v Cu vo dung dch AgNO3 d, khuy k chon khi phn ng kt thc thu c 54 gam kim loi. Mt khc cng cho a gam hnhp bt kim loi trn vo dung dch CuSO4 d, khuy k cho n khi phn ng kt

thc thu c (a + 0,5) gam kim loi. Gi tr ca a lA .5,9. B .15,5.C .32,4. D. 9,6.

21.

Ngi ta ph mt lp bc trn mt vt bng ng c khi lng 8,48 gam bng cchngm vt trong dung dch AgNO3. Sau mt thi gian ly vt ra khi dung dch,ra nh, lm kh cn c 10 gam. Khi lng Ag ph trn b mt ca vt l

A .1,52 gam. B .2,16 gam.C. 1,08 gam. D. 3,2 gam.

22

.

Cho m gam hn hp Mg, Al vo 250 ml dung dch X cha hn hp axit HCl 1M v

H2SO4 0,5M thu c 5,32 lt H2 ( ktc) v dung dch Y (coi th tch dung dch khngi). Dung dch Y c pH lA. 1. B. 2.C. 6. D. 7.

23.

Ho tan hon ton hn hp X gm Fe v Mg bng mt lng va dung dch HCl20% thu c dung dch Y. Nng ca FeCl2 trong dung dch Y l 15,76%. Nng % ca MgCl2 trong dung dch Y l

A. 24,24%. B. 11,79%.C. 28,21%. D. 15,76%.

24. Cho m gam hn hp bt Zn v Fe vo lng d dung dch CuSO4. Sau khi kt thccc phn ng, lc b phn dung dch thu c m gam bt rn. Thnh phn % theo

khi lng ca Zn trong hn hp ban u lA. 90,27%. B. 85,30%.C. 82,20%. D. 12,67%.

25.

Ngm thanh Fe vo dung dch cha 0,03 mol Cu(NO3)2 mt thi gian, ly thanh kimloi ra thy trong dung dch ch cn cha 0,01 mol Cu(NO3)2. Gi s kim loi sinh rabm ht vo thanh Fe. Hi khi lng thanh Fe tng hay gim bao nhiu gam?

A. Tng 0,08 gam. B. Tng 0,16 gam.C. Gim 0,08 gam. D. Gim 0,16 gam

26.

Ngm 1 vt bng Cu c khi lng 10 gam trong 250 gam dung dch AgNO3 4%. Khily vt ra khi dung dch th khi lng AgNO3 trong dung dch gim 17%. Khi lng


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ca vt sau phn ng lA. 27 gam. B. 10,76 gam.C. 11,08 gam. D. 17 gam.

27.

C 2 l kim loi cng cht, cng khi lng, c kh nng to ra hp cht c s oxi ho +2.Mt l c ngm trong dung dich Pb(NO3)2 v l kia c ngm trong dung dchCu(NO3)2. Sau 1 thi gian ngi ta ly cc l kim loi ra khi dung dch, ra nh, lm kh.

Nhn thy khi lng l kim loi ngm trong mui ch tng 19%, cn l kim loi kia gim9,6%. Bit rng, trong 2 phn ng trn, khi lng cc kim loi b ho tan nh nhau. Lkim loi dng l

A. Mg. B. Zn.C. Cd. D. Fe.

28.

Ho tan 25 gam mui CuSO4.5H2O vo nc c 500 ml dung dch. Cho dn mtst vo 50 ml dung dch trn, khuy nh cho n khi ht mu xanh. Khi lng chtrn thu c sau phn ng tng hay gim bao nhiu gam?

A. Tng 0,8 gam. B. Tng 0,08 gam.C. Gim 0,08 gam. D. Gim 0,8 gam.

29.

Trong cu mui ca pin in ho Zn Cu c s di chuyn ca:A. cc ion. B. cc electron.C. cc nguyn t Cu. D. cc nguyn t Zn.

30.

Phn ng trong pin in ho Zn Cu ca na pin no sau y l s kh?A. 2Cu Cu + 2e+ . B. 2Cu + 2e Cu+ .C. 2Zn + 2e Zn+ . D. 2+Zn Zn +2e .

31.

Trong pin in ha, s oxi ha xy ra:A. ch anot. B. ch catot.C. c anot v catot. D. khng anot, khng catot.

32.

Khi pin in ha Cr Cu phng in, xy ra phn ng:2+ 3+2Cr +3Cu 2Cr + 3Cu

Bit + += =3 20 0Cr Cu

Cr CuE 0,74 V; E + 0,34 V, sut in ng ca pin in ha (0pinE ) l

A. 1,40 V. B. 1,08 V.C. 1,25 V. D. 2,5 V.

33

.

Nhn nh no sau y khng ng?

A. Cht oxi ha v cht kh ca cng mt nguyn t kim loi to nn cp oxi ha -kh.B. Khi pin in ha (Zn Cu) hot ng xy ra phn ng gia cp oxi ha - kh

2 2+Zn CuvZn C u+

lm cho nng Cu2+ trong dung dch gim dn, nng Zn2+ tng dn.

C. Sut in ng chun ca pin in ha ph thuc vo: bn cht cp oxi ha -kh; nng cc dung dch mui v nhit .

D. Trong pin in ha phn ng oxi ha - kh xy ra nh dng in 1 chiu.34

.Cho bit th in cc chun ca cc cp oxi ho - kh

2Mg ;Mg+

2+Zn ;

Zn

2+Cu ;Cu

+Ag

Agln lt l -2,37 V; -0,76 V; +0,34 V; +0,8 V.0pinE 2,71 V= + l sut in ng


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chun ca pin in ho no trong s cc pin sau:A. Mg Cu.B. Zn Ag.C. Mg Zn.D. Zn Cu.

35.

Phn ng ho hc xy ra trong pin in ho Zn Cu:2 2Cu Zn Zn Cu+ ++ + .

Trong pin :A. Cu2+ b oxi ho.B. Cu l cc m.C. Zn l cc dng.D. Zn l cc m.

36. Bit th in cc chun ca cc cp oxi ho - kh

2Mg ;Mg+

2+Zn ;Zn

2+Sn ;Sn2+

Fe ;Fe2+

Cu Cu ln lt l -2,37 V; -0,76 V; -0,14 V; -0,44 V; +0,34 V.Qu trnh: 2Sn Sn 2e+ + xy ra khi ghp in cc Sn vi in cc no sau y:

A. Mg. B. Zn.C. Fe. D. Cu.

37.

Cho bit phn ng ho hc ca pin in ho Zn Ag:+ 2Zn 2Ag Zn +2Ag++

Sau mt thi gian phn ng:A. khi lng ca in cc Zn tng.

B. khi lng ca in cc Ag gim.C. nng ca ion Zn2+ trong dung dch tng.D. nng ion Ag+ trong dung dch tng.

38.

Khi pin in ho Zn Pb phng in, ion Pb2+ di chuyn v:A. cc dng v b oxi ha.B. cc dng v b kh.C. cc m v b kh.D. cc m v b oxi ha.

39. Cho bit th in cc chun ca cc cp oxi ha - kh 2

2H;H

+

2+Zn

;Zn2+Cu

;Cu +Ag

Agln lt l 0,00V; -0,76V; +0,34V; +0,8V.

Sut in ng ca pin in ho no sau y ln nht:A. 22Ag 2H 2Ag H+ ++ + .B. 2 2Zn 2H Zn H+ ++ + .C. 2 2Zn Cu Zn Cu+ ++ + .D. 2Cu 2Ag Cu 2Ag+ ++ + .

40.

Nhn nh no sau y khng ng?A. Dy in ha chun ca kim loi l dy cc cp oxi ha - kh ca kim loi c


27


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sp xp theo chiu th n0M

ME + tng dn.

B. n0M

ME + cng ln th tnh oxi ha ca cation Mn+ cng mnh v tnh kh ca kim

loi M cng yu v ngc li.C. Chiu phn ng gia 2 cp oxi ha - kh l cation kim loi trong cp oxi ha -

kh c th in cc ln hn c th oxi ho c kim loi trong cp c th incc nh hn.

D. 0 0 0 0pin in ho cc m cc d ng pinE E E v E= lun l s dng.

41.

Cho bit th in cc chun:2 2

0 0Cu Zn

Cu ZnE +0,34 V; E -0,76 V+ += = .

Kt lun no sau y khng ng?A. Cu2+ c tnh oxi ha mnh hn Zn2+.B. Cu c tnh kh yu hn Zn.C. Cu2+ c tnh oxi ha yu hn Zn2+.D. Phn ng xy ra khi pin hot ng l

2 2Zn Cu Zn Cu+ ++ + .42.

Phn ng: 3 2 2Cu 2FeCl 2FeCl CuCl+ + chng t:A. ion Fe2+ c tnh oxi ha mnh hn ion Fe3+.B. ion Fe3+ c tnh kh mnh hn ion Fe2+.C. ion Fe3+ c tnh oxi ha mnh hn ion Cu2+.D. ion Fe3+ c tnh oxi ha yu hn ion Cu2+.

43. Th t mt s cp oxi ha - kh trong dy in ha nh sau:

2

Fe ;Fe+ 2+

Cu ;Cu 3+

2+Fe

Fe cp cht khng phn ng vi nhau l

A. Fe v dung dch CuCl2. B. Fe v dung dch FeCl3.C. Cu v dung dch FeCl2. D. Cu v dung dch FeCl3.

44.

kh ion Fe3+ trong dung dch thnh ion Fe2+ c th dng mt lng d kim loino sau y?

A. Mg. B. Cu.C. Ba. D. Ag..

45. Cho cc ion kim loi: Zn2+, Sn2+, Ni2+, Fe2+, Pb2+. Th t tnh oxi ha gim dn l

A. Pb2+, Sn2+, Ni2+, Fe2+, Zn2+. B. Sn2+, Ni2+, Zn2+, Pb2+, Fe2+.C. Zn2+, Sn2+, Ni2+, Fe2+, Pb2+. D. Pb2+, Sn2+, Fe2+, Ni2+, Zn2+.

46.

kh ion Cu2+ trong dung dch CuSO4 c th dng kim loi no sau y?A. Fe. B. Na.C. Ba. D. Ag.

47.

Mnh no sau y khng ng?A. Fe2+ oxi ha c Cu.B. Fe kh c Cu2+ trong dung dch.C. Fe3+ c tnh oxi ha mnh hn Cu2+.D. Tnh oxi ha ca cc ion tng theo th t Fe2+, H+, Cu2+, Ag+.


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48.

Cho cc phn ng xy ra sau y:

3 3 2 3 3

2 2

(1) AgNO Fe(NO ) Fe(NO ) Ag(2) Mn + 2HCl MnCl + H

+ +

Dy cc ion c sp xp theo chiu tng dn tnh oxi ha lA. Mn2+, H+, Fe3+, Ag+. B. Ag+, Fe3+, H+, Mn2+.

C. Ag+

, Mn2+

, H+

, Fe3+

. D. Mn2+

, H+

, Ag+

, Fe3+

.49.

Cho hn hp Fe, Cu phn ng vi dung dch HNO3 long. Sau khi phn ng honton, thu c dung dch ch cha 1 cht tan v kim loi d. Cht tan l

A. Cu(NO3)2. B. HNO3.C. Fe(NO3)2. D. Fe(NO3)3.

50.

Dy cc ion xp theo chiu gim dn tnh oxi ha l (bit trong dy in ha cp3

2Fe

Fe+

+ ng trc cpAg Ag+

).

A. Ag+, Cu2+, Fe3+, Fe2+. B. Fe3+, Cu2+, Ag+, Fe2+.

C. Ag+, Fe

3+, Cu

2+, Fe

2+. D. Fe

3+, Ag

+, Cu

2+, Fe

2+.

51.

Nhn nh no sau y l ng?A. Phn ng gia kim loi v cation kim loi trong dung dch c s chuyn electron

vo dung dch.

B. Phn ng gia cp oxi ha - kh 2 AgCu v iCu Ag+

+

l do ion Cu2+ c tnh oxiha mnh hn ion Ag+.

C. Phn ng gia cp oxi ha - kh 2 2FeZn v iZn Fe+ +

l do ion Fe2+ c kh nngoxi ha Zn thnh ion Zn2+.

D. Trong phn ng oxi ha - kh cht oxi ha b oxi ha.52.

Khi pin in ha Zn Cu hot ng, kt lun no sau y khng ng?A. Qu trnh oxi ha v kh xy ra trn b mt cc in cc nh sau:

2 2Zn Cu Zn Cu+ ++ + .B. in cc dng xy ra qu trnh 2Cu 2e Cu+ + .C. Nng ca ion Zn2+ trong dung dch tng ln.D. Trong cu mui, cc cation 4NH+ di chuyn sang cc ng dung dch ZnSO4;

cc anion 3NO di chuyn sang cc ng dung dch CuSO4.

53. Cho hn hp bt Mg v Zn vo dung dch cha Cu(NO3)2 v AgNO3 sau phn ngc dung dch A gm hai mui v hai kim loi. Hai mui trong dung dch A l

A. Zn(NO3)2 v AgNO3. B. Mg(NO3)2 v Cu(NO3)2.C. Mg(NO3)2 v Zn(NO3)2. D. Mg(NO3)2 v AgNO3.

54.

Cho mt t bt Fe vo dung dch AgNO3 d sau khi kt thc th nghim thu cdung dch X gm:

A. Fe(NO3)2. B. Fe(NO3)2 v AgNO3.C. Fe(NO3)3 v AgNO3 d. D. Fe(NO3)3.

55.

Cht no sau y c th oxi ha Zn thnh Zn2+?A. Fe. B. Al3+.C. Ag+. D. Mg2+.


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56.

Nhng mt l Mg vo dung dch cha 2 mui FeCl3 v FeCl2. Sau mt thi gian ly lMg ra lm kh ri cn li thy khi lng l Mg gim so vi ban u. Dung dch sauth nghim c cation no sau y?

A. Mg2+. B. Mg2+ v Fe2+.C. Mg2+, Fe2+ v Fe3+. D. B hoc C.

57

.

Cho 3 kim loi Al, Fe, Cu v 4 dung dch ZnSO4, AgNO3, CuCl2, MgSO4. Kim loi no

tc dng c vi c 4 dung dch mui trn?A. Al. B. Fe.C. Cu. D. Khng c kim loi no.

58.

Cho Cu d tc dng vi dung dch AgNO3 c dung dch X. Cho Fe d vo dungdch X c dung dch Y. Dung dch Y cha:

A. Fe(NO3)2. B. Fe(NO3)3.C. Fe(NO3)2 v Cu(NO3)2. D. Fe(NO3)3 v Cu(NO3)2.

59.

Hn hp X gm 3 kim loi: Fe, Ag, Cu. Cho X vo dung dch Y ch cha 1 cht tan,khuy k cho n khi phn ng kt thc thy Fe v Cu tan ht v cn li Ag khng

tan ng bng lng Ag vn c trong hn hp X. Cht tan trong dung dch Y lA. AgNO3. B. Cu(NO3)2.C. Fe2(SO4)3. D. FeSO4.

60.

Cho hn hp Al, Fe vo dung dch cha AgNO3 v Cu(NO3)2 c dung dch X vcht rn Y gm 3 kim loi. Vy cht rn Y gm:

A. Al, Fe, Cu. B. Fe, Cu, Ag.C. Al, Cu, Ag. D. Al, Fe, Ag.

61.

Phn ng oxi ha - kh xy ra khi:A. sn phm c cht kt ta.B. sn phm c cht d bay hi hoc cht in li yu.C. sn phm to thnh cht oxi ha v cht kh yu hn cht phn ng.D. A v B.

62.

Cho hn hp bt kim loi gm: Fe, Ag, Cu vo dung dch AgNO3 d. S phn ngxy ra l

A. 2. B. 3.C. 4. D. 5.

63.

Dung dch FeSO4 c ln tp cht l CuSO4, loi CuSO4 ra khi dung dch c thdng:

A. Fe. B. Cu.C. Al. D. A hoc C.

64.

Cho hn hp gm Cu d, Fe vo dung dch HNO3 long. Sau khi phn ng kt thcthu c dung dch X. Cht tan trong dung dch X l

A. Fe(NO3)3. B. Fe(NO3)2.C. Fe(NO3)3 v Cu(NO3)2. D. Fe(NO3)2 v Cu(NO3)2.

65.

Hn hp bt kim loi X gm: Fe, Ag, Cu. Ngm hn hp X trong dung dch Y ch cha mt cht tan, khuy k cho n khi phn ng kt thc, nhn thy ch c Fe vCu trong hn hp tan ht v thu c khi lng Ag ln hn khi lng Ag vn ctrong hn hp X. Cht tan trong dung dch Y l

A. AgNO3. B. Fe(NO3)3.


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C. Cu(NO2)2. D. A hoc B66.

Ngm mt thanh Cu trong dung dch c cha 0,04 mol AgNO3, sau mt thi gian lythanh kim loi ra thy khi lng tng hn so vi lc u l 2,28 gam. Coi ton bkim loi sinh ra u bm ht vo thanh Cu. S mol AgNO3 cn li trong dung dch l

A. 0,01. B. 0,005.C. 0,02. D. 0,015.

67.

Ho tan 3,23 gam hn hp gm CuCl2 v Cu(NO3)2 vo nc c dung dch X.Nhng thanh kim loi Mg vo dung dch X n khi dung dch mt mu xanh ri lythanh Mg ra, cn li thy tng thm 0,8 gam. Khi lng mui to ra trong dung dchl

A. 1,15 gam. B. 1,43 gam.C. 2,43 gam. D. 4,13 gam.

68.

Nhng thanh Zn vo dung dch cha hn hp 3,2 gam CuSO4 v 6,24 gam CdSO4.Hi sau khi Cu2+ v Cd2+ b kh hon ton th khi lng thanh Zn tng hay gim?

A. Tng 1,39 gam. B. Gim 1,39 gam.

C. Tng 4 gam. D. Gim 4 gam.69.

Trong qu trnh in phn, cc anion di chuyn v:A. catot, y chng b oxi ha.B. anot, y chng b kh.C. anot, y chng b oxi ha.D. catot, y chng b kh.

70.

Trong qu trnh in phn dung dch Pb(NO3)2 vi in cc tr, ion Pb2+ di chuyn vA. cc dng v b oxi ha. B. cc dng v b kh.C. cc m v b oxi ha. D. cc m v b kh.

71.

Trong qu trnh in phn dung dch CuCl2 bng in cc tr:A. ion Cu2+ nhng electron anot.B. ion Cu2+ nhn electron catot.C. ion Cl- nhn electron anot.D. ion Cl- nhng electron catot.

72.

in phn NaCl nng chy bng in cc tr catot thu cA. Cl2. B. Na.C. NaOH. D. H2.

73. Trong qu trnh in phn dung dch CuSO4 bng in cc tr graphit, phn ng nosau y xy ra anot?

A. Ion Cu2+ b kh. B. Ion Cu2+ b oxi ha.C. Phn t H2O b oxi ha. D. Phn t H2O b kh.

74.

Trong qu trnh in phn dung dch NaCl bng in cc tr c mng ngn:A. cation Na+ b kh catot.B. phn t H2O b kh catot.C. ion Cl- b kh anot.D. phn t H2O b oxi ha anot.

75.

Trong qu trnh in phn dung dch CuSO4 vi cc in cc bng Cu, nhn thy:A. nng ion Cu2+ trong dung dch tng dn.


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B. nng ion Cu2+ trong dung dch gim dn.C. nng Cu2+ trong dung dch khng thay i.D. ch c nng ion 24SO l thay i.

76.

Trong qu trnh in phn dung dch CuSO4 vi cc in cc bng graphit, nhn thyA. nng ion Cu2+ trong dung dch tng dn.

B. nng ion Cu2+

trong dung dch gim dn.C. nng ion Cu2+ trong dung dch khng thay i.D. ch c nng ion 24SO l thay i.

77.

Cho cc ion sau: Ca2+, K+, Cu2+, 2 -4 3SO , NO , Br -. Trong dung dch nhng ion nokhng b in phn?

A. Ca2+, 24SO , Cu2+. B. K+, 24SO , Cu2+.C. Ca2+, K+, 2 -4 3SO , NO . D. Ca2+, K+, Br -, 24SO .

78.

ng dng no sau y khng phi l ng dng ca s in phn?A. iu ch cc kim loi, mt s phi kim v mt s hp cht.B. Tinh ch mt s kim loi nh: Cu, Pb, Zn, Fe, Ag, Au, . . .C. M in bo v kim loi chng n mn v to v p cho vt.D. Thng qua cc phn ng in phn sn sinh ra dng in.

79.

Nhn nh no ng v cc qu trnh xy ra cc m v cc dng khi in phndung dch NaCl v in phn NaCl nng chy?

A. cc m u l qu trnh kh ion Na+. cc dng u l qu trnh oxi haion Cl-.

B. cc m u l qu trnh kh H2O. cc dng u l qu trnh oxi ha ionCl-.

C. cc m in phn dung dch NaCl l qu trnh kh ion Na+, in phn NaClnng chy l qu trnh kh H2O. cc dng u l qu trnh oxi ha ion Cl-.

D. cc m in phn dung dch NaCl l qu trnh kh H2O, in phn NaCl nngchy l qu trnh kh ion Na+ . cc dng u l qu trnh oxi ha ion Cl-.

80.

Khi in phn dung dch KCl v dung dch CuCl2 bng in cc tr, in ccdng u xy ra qa trnh u tin l

A. +2 22H O O +4H + 4e

B. -2 22H O +2e H +2OH

C. 22Cl Cl + 2e D. 2Cu + 2e Cu+

81.

in phn mt dung dch cha anion 3NO v cc cation kim loi c cng nng mol:Cu2+, Ag+, Pb2+, Zn2+. Trnh t xy ra s kh ca cc cation ny trn b mt catot l

A. Cu2+, Ag+, Pb2+, Zn2+.B. Pb2+, Ag+, Cu2+, Zn2+.C. Zn2+, Pb2+, Cu2+, Ag+.D. Ag+, Cu2+, Pb2+, Zn2+

82.

in phn dung dch cha a mol CuSO4 v b mol NaCl (bng in cc tr, c mngngn xp). dung dch sau in phn lm phenolphtalein chuyn sang mu hng


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th iu kin ca a v b lA. b > 2a. B. b = 2a.C. b < 2a. D. 2b = a.

83.

in phn hon ton dung dch mui MSO4 bng in cc tr c 0,448 lt kh (ktc) anot v 2,36 gam kim loi M catot. M l kim loi:

A. Cd. B. Ni.C. Mg. D. Cu.

84.

Sau mt thi gian in phn 200 ml dung dch CuCl2 thu c 1,12 lt kh X ( ktc).Ngm inh st vo dung dch sau in phn, khi phn ng xy ra hon ton thy khilng inh st tng thm 1,2 gam. Nng mol ca CuCl2 ban u l

A. 1M. B. 1,5M.C. 1,2M. D. 2M.

85.

Khi in phn mt mui, nhn thy pH khu vc gn mt in cc tng ln. Dungdch mui l

A. CuSO4. B. KCl.C. ZnCl2. D. AgNO3.

86.

in phn 200 ml dung dch MNO3 bng in cc tr n khi catot bt u c khthot ra th ngng in phn. trung ho dung dch sau in phn, phi dng 250ml dung dch NaOH 0,8M. Mt khc, nu ngm 1 thanh Zn c khi lng 50 gam vo200 ml dung dch MNO3 khi phn ng xong khi lng thanh Zn tng thm 30,2% sovi ban u. Cng thc ca MNO3 l

A. NaNO3. B. AgNO3.C. NH4NO3. D. KNO3.

87

.

Sau mt thi gian in phn 200 ml dung dch CuSO4 (D = 1,25 g/ml) bng in cc

tr graphit thy khi lng dung dch gim 8 gam. lm kt ta ht ion Cu2+

cn litrong dung dch sau in phn, cn dng 100 ml dung dch H2S 0,5M. Nng molv nng phn trm ca dung dch CuSO4 trc in phn l

A. 2,75M v 32,5%. B. 0,75M v 9,6%.C. 0,75M v 9,0%. D. 0,75M v 32,5%.

88.

in phn dung dch CuCl2 bng in cc tr, sau mt thi gian thu c 0,32 gamCu catot v mt lng kh X anot. Hp th hon ton lng kh X trn vo 200ml dung dch NaOH ( nhit thng). Sau phn ng, nng NaOH cn li l0,05M (gi thit th tch dung dch khng thay i). Nng mol ban u ca dungdch NaOH l

A. 0,15M. B. 0,2M.C. 0,1M. D. 0,05M.

89.

Trong kh quyn c cc kh sau: O2, Ar, CO2, H2O, N2. Nhng kh no l nguyn nhngy ra n mn kim loi?

A. O2 v H2O. B. CO2 v H2O.C. O2 v N2. D. A hoc B.

90.

Loi phn ng ha hc xy ra trong s n mn kim loi lA. phn ng th. B. phn ng phn hu.C. phn ng oxi ha - kh. D. phn ng ha hp.

91.

Kim loi no sau y c kh nng t to ra mng oxit bo v khi ngoi khng khm?


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A. Zn. B. Fe.C. Ca. D. Na.

92.

Cho cc cp kim loi nguyn cht tip xc trc tip vi nhau. Fe v Pb; Fe v Zn; Fev Sn; Fe v Ni. Khi nhng cc cp kim loi trn vo dung dch axit s cp kim loitrong Fe b ph hu trc l

A. 1. B. 2.

C. 3. D. 4.93.

Khi lu trong khng kh m mt vt bng st ty (st trng thic) b sy st su tilp st bn trong, s xy ra qu trnh:

A. Sn b n mn in ha. B. Fe b n mn in ha.C. Fe b n mn ha hc. D. Sn b n mn ha hc.

94.

bo v v tu bin lm bng thp ngi ta thng gn vo v tu (phn ngmdi nc) nhng tm kim loi no sau y?

A. Sn. B. Pb.C. Zn. D. Cu.

95.

Ngi ta d nh dng mt s phng php chng n mn kim loi sau:1. Cch li kim loi vi mi trng xung quanh.2. Dng hp kim chng g.3. Dng cht km hm.4. Ngm kim loi trong H2O.5. Dng phng php in ha.Phng php ng l

A. 1, 3, 4, 5. B. 1, 2, 3, 4.C. 2, 3, 4, 5. D. 1, 2, 3, 5.

96.

S ph hu kim loi hoc hp kim do tc dng ca cc cht trong mi trng gi lA. s n mn ha hc. B. s n mn in ha.C. s n mn kim loi. D. s kh kim loi.

97.

Pht biu no sau y l ng khi ni v n mn ha hc?A. n mn ha hc lm pht sinh dng in mt chiu.B. Kim loi tinh thit s khng b n mn ha hc.C. V bn cht, n mn ha hc cng l mt dng ca n mn in ha.D. n mn ha hc khng lm pht sinh dng in.

98.

bo v tu bin lm bng thp (phn chm di nc bin), ng thp dn nc, dndu, dn kh t ngm di t ngi ta gn vo mt ngoi ca thp nhng tm Zn.Ngi ta bo v thp khi s n mn bng cch no?

A. Cch li kim loi vi mi trng.B. Dng phng php in ho.C. Dng Zn l cht chng n mn.D. Dng Zn l kim loi khng g.

99.

Cun mt si dy thp vo mt thanh kim loi ri nhng vo dung dch H2SO4 long.Quan st thy bt kh thot ra rt nhanh t si dy thp. Thanh kim loi dng c

th lA. Cu. B. Ni.C. Zn. D. Pt.


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100.

Ngm mt l Zn vo dung dch HCl thy bt kh thot ra t v chm. Nu nh thmvo vi git dung dch X th thy bt kh thot ra rt nhiu v nhanh. Cht tan trongdung dch X l

A. H2SO4. B. FeSO4.C. NaOH. D. MgSO4.

10

1.

Cm 2 l kim loi Zn v Cu ni vi nhau bng mt si dy dn vo cc thu tinh. Rt

dung dch H2SO4 long vo cc thu tinh thy kh H2 thot ra t l Cu. Gii thchno sau y khng ng vi th nghim trn?A. Cu tc dng vi H2SO4 sinh ra H2.B. cc dng xy ra phn ng kh: 22H + 2e H+ .C. cc m xy ra phn ng oxi ho: 2+Zn Zn + 2e .D. Zn b n mn in ha v sinh ra dng in.

102.

iu kin xy ra n mn in ha lA. cc in cc phi khc nhau, c th l 2 cp kim loi kim loi; cp kim loi

phi kim hoc cp kim loi - hp cht ha hc.B. cc in cc phi tip xc trc tip hoc gin tip vi nhau qua dy dn.C. cc in cc cng tip xc vi dung dch cht in li.D. c 3 iu kin trn.

103.

Mt si dy phi qun o bng Cu ni vi mt on dy Al trong khng kh. Hintng v kt lun no sau y ng?

A. Ch ni ca 2 kim loi Cu Al trong t nhin xy ra hin tng n mn inha.

B. Al l cc m b n mn nhanh. Dy b t.C. Khng nn ni bng nhng kim loi khc nhau, nn ni bng on dy Cu.D. C A, B, C u ng.

104.

Nguyn tc chung iu ch kim loi lA. thc hin s kh cc kim loi.B. thc hin s kh cc ion kim loi.C. thc hin s oxi ha cc kim loi.D. thc hin s oxi ha cc ion kim loi.

105.

Khi iu ch kim loi cc ion kim loi ng vai tr l cht:A. kh. B. cho proton.

C. b kh. D. nhn proton.106.

Phng php thch hp iu ch Mg t MgCl2 lA. dng kali kh ion Mg2+ trong dung dch.B. in phn MgCl2 nng chy.C. in phn dung dch MgCl2.D. nhit phn MgCl2.

107.

Trong s nhng cng vic sau, vic no khng c thc hin trong cng nghipbng phng php in phn?

A. iu ch kim loi Zn. B. iu ch kim loi Cu.C. iu ch kim loi Fe. D. M niken.

108.

C th thu c kim loi no trong s cc kim loi sau: Cu, Na, Ca, Al bng c 3phng php iu ch kim loi ph bin?


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A. Na. B. Ca.C. Cu. D. Al.

109.

Kim loi no sau y ch c th iu ch c bng phng php in phn?A. Fe. B. Cu.C. Zn. D. Al.

110. Cho kh CO (d) i qua ng s nung nng ng hn hp X gm: Al2O3, MgO, Fe3O4,CuO thu c cht rn Y. Cho Y vo dung dch NaOH (d), khuy k, thy cn liphn khng tan Z. Gi s cc phn ng xy ra hon ton. Phn khng tan Z gm:

A. MgO, Fe, Cu. B. Mg, Fe, Cu.C. MgO, Fe3O4, Cu. D. Mg, FeO, Cu.

111.

Dy gm cc kim loi c iu ch trong cng nghip bng phng php inphn hp cht nng chy ca chng l

A. Na, Ca, Al. B. Na, Ca, Zn.C. Na, Cu, Al. D. Fe, Ca, Al.

112.

Cho lung kh H2 (d) qua hn hp cc oxit sau: CuO, Fe2O3, ZnO, MgO nung nhit cao. Sau phn ng hon ton hn hp rn cn li l

A. Cu, Fe, Zn, MgO. B. Cu, Fe, ZnO, MgO.C. Cu, Fe, Zn, Mg. D. Cu, FeO, ZnO, MgO.

113.

T mi cht Cu(OH)2, NaCl, FeS2 la chn phng php thch hp (cc iu kinkhc c ) iu ch ra cc kim loi tng ng. Khi , s phn ng ti thiu phithc hin iu ch c 3 kim loi Cu, Na, Fe l

A. 3. B. 4.C. 5. D. 6.

114.

T cc cht ring bit: CuSO4, CaCO3, FeS iu ch c cc kim loi Cu, Ca,Fe th s phng trnh phn ng ti thiu phi thc hin l (cc iu kin khc c):

A. 4. B. 5.C. 6. D. 7.

115.

in phn dung dch X cha hn hp cc mui sau: CaCl2, FeCl3, ZnCl2, CuCl2. Ionu tin b kh catot l

A. Cl-. B. Fe3+.C. Zn2+. D. Cu2+.

116.

in phn dung dch X cha hn hp cc mui sau: CaCl2, FeCl3, ZnCl2, CuCl2. Kimloi u tin thot ra catot l

A. Ca. B. Fe.C. Zn. D. Cu.

117.

in phn dung dch X cha hn hp cc mui sau: NaCl, CuCl2, FeCl3, ZnCl2. Kimloi cui cng thot ra catot trc khi c kh thot ra l

A. Fe. B. Cu.C. Na. D. Zn.

118.

Trong cc phng php sau, phng php no iu ch c Cu c tinh khitcao t Cu(OH)2.CuCO3 (X).

A. 2+dd HCl +Fe dX dung dch CuCl Cu


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B. 4+dd H SO pdd2 4X dung dch CuSO Cu

C. 2 2 khanpnc+ dd HCl c cnX dung dch CuCl CuCl

D.0

d0

+CttX CuO Cu

119.

in phn 200 ml dung dch cha 2 mui Cu(NO3)2 xM v AgNO3 yM vi cng dng in 0,804A, thi gian in phn l 2 gi, ngi ta thy khi lng catot tngthm 3,44 gam. Gi tr ca x v y l

A. x = y = 0,1. B. x = y = 0,02.C. x = 0,02; y = 0,01. D. x = y = 0,05.

120.

Kh hon ton 4,06 gam oxit kim loi bng CO nhit cao thnh kim loi. Dn tonb sn phm kh sinh ra vo dung dch Ca(OH)2 d thy to thnh 7 gam kt ta. Nuly lng kim loi sinh ra ho tan ht vo dung dch HCl th thu c 1,176 lt kh H2 (ktc). Cng thc ca oxit kim loi dng l

A. CuO. B. Al2O3.C. Fe3O4. D. ZnO.

121.

Thi mt lung kh CO (d) i qua ng s ng m gam hn hp gm Fe3O4 v CuOnung nng n phn ng hon ton thu c 2,32 gam hn hp kim loi. Kh thotra c hp th ht vo bnh ng dung dch Ca(OH)2 d thu c 5 gam kt ta.Gi tr ca m l

A. 3,21. B. 3,32.C. 3,22. D. 3,12.

122.

in phn in cc tr dung dch mui clorua ca mt kim loi ho tr II vi cng dng in l 3,0A. Sau 1930 giy thy khi lng catot tng 1,92 gam. Kim loi trongmui dng l

A. Cu. B. Zn.C. Ba. D. Fe.123.

in phn 500 ml dung dch AgNO3 vi in cc tr cho n khi catot bt u c khthot ra th ngng. trung ho dung dch sau in phn cn 800 ml dung dchNaOH 1M. Bit cng dng in dng l 20A, thi gian in phn l

A. 4013 giy. B. 3728 giy.C. 3918 giy. D. 3860 giy.

124.

Cho 14 gam bt Fe vo 400 ml dung dch X gm: AgNO3 0,5M v Cu(NO3)2 xM.Khuy nh cho ti khi phn ng kt thc thu c dung dch Y v 30,4 gam cht rnZ. Gi tr ca x l

A. 0,15M. B. 0,125M.C. 0,2M. D. 0,1M.

125.

in phn 400 ml dung dch gm: AgNO3 0,2M v Cu(NO3)2 0,1M vi cng dngin I = 10A, anot tr. Sau mt thi gian t ngt dng in sy kh catot ri cn lithy khi lng catot nng thm m gam, trong c 1,28 gam Cu. Gi tr ca m v tl

A. 1,28 gam; 1930 s.B. 9,92 gam; 1930 s.C. 2,28 gam; 965 s.D. 9,92 gam; 965 s.

12 Mt hn hp X gm: Fe, FeO v Fe2O3. Cho 4,72 gam hn hp ny tc dng vi CO d


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nhit cao. Khi phn ng xong thu c 3,92 gam Fe. Nu ngm cng mt lnghn hp trn vo dung dch CuSO4 d, phn ng xong thu c 4,96 gam cht rn.Khi lng Fe, FeO v Fe2O3 trong X l

A. 1,2 gam; 1,19 gam v 2,01 gam.B. 1,8 gam; 1,42 gam v 1,5 gam.C. 1,68 gam; 1,44 gam v 2,07 gam.

D. 1,68 gam; 1,44 gam v 1,6 gam.127.

Cho hn hp gm 2,8 gam Fe v 0,81 gam Al vo 200 ml dung dch X cha AgNO3v Cu(NO3)2 khi phn ng kt thc c dung dch Y v 8,12 gam cht rn Z gm 3kim loi. Cho cht rn Z tc dng vi dung dch HCl d c 0,672 lt H2 ( ktc).Nng mol ca dung dch AgNO3 v dung dch Cu(NO3)2 ln lt l

A. 0,1; 0,2. B. 0,15; 0,25.C. 0,28; 0,15. D. 0,25; 0,1.

128.

C 5,56 gam hn hp X gm Fe v kim loi M (c ho tr khng i). Chia X lm 2phn bng nhau.

Phn 1 ha tan ht trong dung dch HCl c 1,568 lt H2 ( ktc).Phn 2 ha tan ht trong dung dch HNO3 long c 1,344 lt NO ( ktc) (snphm kh duy nht). Kim loi M dng l

A. Zn. B. Al.C. Mg. D. Ca.

129.

C 3 mu hp kim: Fe Al; K Na; Cu Mg. Ha cht c th dng phn bit 3mu hp kim trn l

A. dung dch NaOH. B. dung dch HCl.C. dung dch H2SO4. D. dung dch MgCl2.

130. C 4 dung dch mui: AgNO3, KNO3, CuCl2, ZnCl2. Khi in phn (vi in cc tr)dung dch mui no th c kh thot ra c anot v catot?

A. ZnCl2. B. KNO3.C. CuCl2. D. AgNO3.

131.

Cho 4,48 lt kh CO ( ktc) t t i qua ng s nung nng ng 8 gam mt oxit stn khi phn ng xy ra hon ton. Kh thu c sau phn ng c t khi so vi H2bng 20. Cng thc ca oxit st v phn trm th tch kh CO2 trong hn hp sauphn ng l

A. FeO; 75%. B. Fe2O3; 75%.C. Fe2O3; 65%. D. Fe3O4; 75%.

132.

C 3 mu hp kim: Cu Ag; Cu Al; Cu Zn. Ch dng 1 dung dch axit thng dngv 1 dung dch baz thng dng no sau y phn bit c 3 mu hp kimtrn?

A. HCl v NaOH.B. HNO3 v NH3.C. H2SO4 v NaOH.D. H2SO4 long v NH3.


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133.

C 5 mu kim loi: Ba, Mg, Fe, Al, Ag. Thuc th no tt nht nhn bit c c 5kim loi trn?

A. dung dch NaOH. B. dung dch HCl.C. dung dch H2SO4 long. D. Dung dch NH3.

134.

Mt thanh kim loi M ho tr II nhng vo 2 lt dung dch FeSO4, sau phn ng khilng thanh kim loi M tng 32 gam. Cng thanh kim loi y nhng vo 2 lt dungdch CuSO4, sau phn ng khi lng thanh M tng 40 gam (gi s ton b lngkim loi thot ra u bm ln thanh kim loi M v cc phn ng xy ra hon ton).Kim loi M dng v nng mol ca dung dch CuSO4 l

A. Zn; 0,4M. B. Cd; 0,6M.C. Mg; 0,5M. D. Ba; 0,7M.

135.

in phn dung dch AgNO3 trong thi gian 16,08 pht vi cng dng in l5A, c V lt kh anot. kt ta ht ion Ag+ cn li trong dung dch sau inphn cn dng 25 ml dung dch NaCl 0,4M. Khi lng AgNO3 c trong dung dchban u v gi tr ca V l

A. 10,08 gam; 0,56 lt. B. 8,5 gam; 0,28 lt.C. 10,2 gam; 0,28 lt. D. 8,5 gam; 1,12 lt.

136.

in phn mt dung dch c ho tan 13,5 gam CuCl2 v 14,9 gam KCl (c mng ngnv in cc tr) trong thi gian 2 gi vi cng dng in l 5,1A. Dung dch sauin phn c trung ho va bi V lt dung dch HCl 1M. Gi tr ca V l

A. 0,18. B. 0,7.C. 0,9. D. 0,5.

137.

Dung dch FeSO4 c ln tp cht CuSO4. Phng php ho hc n gin loic tp cht l

A. in phn dung dch vi in cc tr n khi ht mu xanh.B. Chuyn hai mui thnh hiroxit, oxit kim loi ri ho tan bng H2SO4 long.C. Cho Mg vo dung dch cho n khi ht mu xanh.D. Cho Fe d vo dung dch, sau khi phn ng xong lc b cht rn.

138.

Cho cc phn ng oxi ha - kh sau:1. 2+ +Hg + 2Ag Hg + 2Ag 2. 2 2+Hg + Cu Hg + Cu+ 3. 3+ 2+3Hg + 2Au 3Hg + 2Au 4. 2+2Ag + Cu 2Ag + Cu+ Trong cc cht cho trn, cht oxi ha mnh nht l

A. Au3+. B. Hg2+.C. Ag+. D. Cu2+.

139.

Trong cu sau, trng in sai lBa phn ng c th xy ra in cc . . .(1). . . l oxi ha nhng . . .(2). . . trongdung dch; oxi ha nhng phn t . . . (3) . . . ; oxi ha . . . (4) . . . cu to nn incc.

A. (1) m. B. (2) ion.C. (3) nc. D. (4) kim loi.

14 Cho 1,12 gam bt Fe v 0,24 gam bt Mg tc dng vi 250 ml dung dch CuSO4 xM,


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khuy nh cho n khi dung dch mt mu xanh nhn thy khi lng kim loi sauphn ng l 1,88 gam. Gi tr ca x l

A. 0,04M. B. 0,06M.C. 0,1M. D. 0,025M.

141.

X l hp kim ng thau c cha 60% Cu v 40% Zn. Ho tan 32,2 gam X trong dungdch HNO3 long c V lt ( ktc) kh NO (sn phm kh duy nht). Cng thc ca

X v gi tr ca V lA. Cu2Zn3; 7,467. B. Cu3Zn2; 74,67.C. Cu3Zn2; 7,467. D. Cu2Zn3; 74,67.

142.

Nhng nhm nguyn t no di y ngoi nguyn t kim loi cn c nguyn t phikim?

A. Tt c cc nguyn t f.B. Tt c cc nguyn t d.C. Tt c cc nguyn t s (tr nguyn t H).D. Tt c cc nguyn t p (tr nguyn t Bo).

143. Cho bit th in cc chun ca cc cp oxi ha - kh:

2 32

Mg Fe; ;Mg Fe+

+

+

2Fe ;Fe+

2Ag Cu;Ag Cu+

+

ln lt l -2,37 V; +0,77 V; -0,44 V; + 0,8 V; +0,34 V.Cc cp kim loi no di y khi phn ng vi dung dch Fe(NO3)3 th ch c thkh Fe3+ thnh Fe2+.

A. Mg v Fe. B. Fe v Cu.C. Cu v Ag. D. Mg v Ag.

144.

Khi cho hn hp kim loi gm: Mg v Al vo dung dch hn hp cha Cu(NO3)2 vAgNO3 th phn ng xy ra u tin l

A. 2+ 2+Mg + Cu Mg Cu +B. 2+ 3+2Al + 3Cu 2Al 3Cu +C. + 2+Mg + 2Ag Mg 2Ag +D. + 3+Al + 3Ag Al 3Ag +

145.

Ho tan mt hn hp bt kim loi c cha 5,6 gam Fe v 6,4 gam Cu vo 350 mldung dch AgNO3 2M. Sau khi cc phn ng xy ra hon ton, khi lng cht rnthu c l

A. 64,8 gam. B. 54 gam.C. 20,8 gam. D. 43,2 gam

146.

Mt si dy phi qun o bng Cu c ni vi mt on dy Al. Trong khng khm, ch ni ca hai kim loi xy ra hin tng no sau y?

A. Ch ni hai kim loi Al Cu trong khng kh m xy ra hin tng n mn inho. Kim loi Al l cc dng, b n mn.

B. Ch ni 2 kim loi Al Cu trong khng kh m xy ra hin tng n mn inho. Kim loi Al l cc m, b n mn.

C. Do kim loi Al to thnh lp oxit bo v nn trong khng kh m khng cnh hng n bn ca dy Al ni vi Cu.

D. Khng c hin tng ho hc no xy ra ti ch ni 2 kim loi Al Cu trongkhng kh m.


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147.

bo v nhng vt bng Fe khi b n mn, ngi ta trng hoc m ln nhng vt lp Sn hoc lp Zn. Lm nh vy l chng n mn theo phng php no sauy?

A. Bo v b mt.B. Bo v in ho.C. Dng cht km hm.

D. Dng hp kim chng g.148.

Nhn nh no di y khng ng v bn cht qu trnh ha hc in cc trongqu trnh in phn?

A. Anion nhng electron anot.B. Cation nhn electron catot.C. S oxi ha xy ra catot.D. S kh xy ra catot.

149.

Cho cc kim loi: Na, Ca, Fe, Zn ,Cu ,Ag. Nhng kim loi khng kh c H2O, d nhit cao l

A. Fe, Zn, Cu, Ag.B. Cu, Ag.C. Na, Ca, Cu, Ag.D. Fe, Cu, Ag.

150.

Cho a mol Mg v b mol Zn vo dung dch cha c mol Cu2+ v d mol Ag+. Bit rngda c .2

< + Tm mi quan h gia b v a, c, d c mt dung dch cha 3 ion kim

loi.A. b > c a.

B. b < c a.C. db c a 2

> +

D. db c a 2< +


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Bi s 1

(Thi gian lm bi : 87x 1,8 pht/ 1cu = 160 pht)H Ni, Ngy 20 thng 9 nm 2008

Vn 6( 5 cu)KIM LOI KIM, KIM LOI KIM TH, NHM

1. Nhng nguyn t nhm IA ca bng tun hon c sp xp theo trnh t tng dnca:

A. nguyn t khi.B. bn knh nguyn t.C. s oxi ho.D. in tch ht nhn ca nguyn t.

2. Nguyn t kim loi kim c bao nhiu electron phn lp s ca lp electron ngoicng:

A. 1. B. 2.C. 3. D. 4.

3. Nguyn t no ch c trng thi hp cht trong t nhin:A. Au. B. Ne.C. Na. D. Ag.

4. Kim loi c tnh kh mnh nht trong cc kim loi kim (Li, Na, K, Cs) lA. Na. B. K.C. Li. D. Cs.

5. Nhng c im no sau y l chung cho cc kim loi nhm IA?A. S lp electron.

B. Bn knh nguyn t.C. in tch ht nhn ca nguyn t.D. S oxi ho ca cc nguyn t trong hp cht.

6. Nhng c im no sau y khng phi l chung cho cc kim loi kim?A. S electron lp ngoi cng ca nguyn t.B. Cu to mng tinh th ca n cht.C. S oxi ho ca cc nguyn t trong hp cht.D. S lp electron.

7. Kim loi kim c tnh kh mnh nht trong tt c cc kim loi l do nguyn nhn nosau y?

A. Kim loi kim d nng chy nht nn d nhng electron.


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B. Kim loi kim nh nht nn d nhng electron.C. Kim loi kim c nng lng ion ho I1 nh nht.D. Kim loi kim ch c s oxi ho +1 trong cc hp cht.

8. Nhn nh khng ng v ng dng ca kim loi kim?A. Ch to hp kim c nhit nng chy thp dng trong thit b bo chy.B. Dng iu ch mt s kim loi him bng phng php nhit luyn.C. M bo v kim loi.D. Kim loi Cs dng ch to t bo quang in.

9. bo qun cc kim loi kim ngi ta:A. ngm chng trong nc.B. ngm chng trong ancol etylic.C. gi chng trong l c y np kn.D. ngm chng trong du ho.

10

.

Kim loi kim c nhit nng chy thp v mm l do

A. c cu to mng tinh th lp phng tm din tng i rng.B. c khi lng ring nh.C. c tnh kh rt mnh.D. c lc lin kt kim loi trong mng tinh th km bn.

11.

Ho tan hon ton 1,36 gam hn hp 2 kim loi kim k tip nhau trong nhm IA vonc c 0,56 lt kh H2 (ktc). l 2 kim loi no?

A. Na, K. B. Rb, Cs.C. K, Rb. D. Li, Na.

12.

Ion Na+ khng tn ti trong phn ng no sau y?A. NaOH tc dng vi HCl.B. NaOH tc dng vi CuCl2.C. Phn hu NaHCO3 bng nhit.D. in phn NaOH nng chy.

13.

Ion Na+ tn ti trong phn ng no sau y?A. in phn NaOH nng chy.B. in phn NaCl nng chy.C. in phn dung dch NaOH.

D. in phn Na2O nng chy.14.

Trong qu trnh in phn dung dch NaCl, cc m xy ra:A. s kh ion Na+.B. s oxi ha Na+.C. s kh phn t H2O.D. s oxi ha phn t H2O.

15.

Trong qu trnh in phn dung dch KBr, phn ng no sau y xy ra anot?A. Ion Br - b oxi ha.B. Ion Br - b kh.C. Phn t H2O b kh.D. Ion K+ b oxi ha.


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16.

Phng trnh ha hc no sau y khng ng?A. 3 2 3 2 3 22NaHCO + 2KOH Na CO + K CO + 2H O

B. 3 2 2 3 3 3Ca(HCO ) + Na CO CaCO + 2NaHCO

C. 2 2 2p ddc mng ngn2NaCl +2H O 2NaOH +H +Cl

D.3 2 2

0t2KNO 2K 2NO O + +

17.

iu ch KOH ngi ta d nh dng mt s phng php sau:1. in phn dung dch KCl khng c mng ngn.2. in phn dung dch KCl c mng ngn.3. Cho mt lng va Ba(OH)2 vo dung dch K2CO3.4. Nhit phn K2CO3 thnh K2O sau cho K2O tc dng vi H2O.Phng php ng l

A. 1, 4. B. 3, 4.C. 2, 3. D. 1, 2.

18.

iu ch Na2CO3 c th dng phng php no sau y?A. Cho dung dch K2CO3 tc dng vi dung dch Na2SO4.B. Nhit phn NaHCO3.C. Cho kh CO2 d i qua dung dch NaOH.D. Cho CaCO3 tc dng vi dung dch NaCl.

19.

Dung dch NaOH c th tc dng vi tt c cc cht trong dy no sau y?A. CuSO4, HNO3, SO2, CuO. B. K2CO3, HNO3, CuO, SO2.C. CuSO4, HCl, SO2, Al2O3. D. BaCl2, HCl, SO2, K.

20. Cho a mol CO2 vo dung dch cha b mol NaOH, thu c dung dch X. Dung dch Xva tc dng c vi HCl va tc dng c vi KOH. Quan h gia a v b l

A. a > b. B. b > 2a.C. a = b. D. a < b < 2a.

21.

250 ml dung dch HCl va ho tan hn hp Na2CO3 v Na2SO3 to ra mui duynht ng thi thu c 2,8 lt kh (ktc). Nng mol ca dung dch HCl l

A. 2M. B. 0,5M.C. 1M. D. 2,5M.

22

.

Cho t t dung dch cha a mol HCl vo dung dch cha b mol Na2CO3 ng thi

khuy u, thu c V lt kh (ktc) v dung dch X. Khi cho d nc vi trong vodung dch X thy xut hin kt ta. Biu thc lin h gia V vi a v b lA. V = 22,4(a b).B. V = 11,2(a b).C. V = 11,2(a + b).D. V = 22,4(a + b).

23.

C th dng NaOH rn lm kh dy cc kh no sau y?A. NH3, SO2, CO, Cl2.B. N2, NO2, CO2, CH4, H2.

C. NH3, O2, N2, CH4, H2.D. N2, Cl2, O2, CO2, H2.


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24.

Hn hp X cha Na2O, NH4Cl, NaHCO3 v BaCl2 c s mol mi cht u bng nhau.Cho hn hp X vo nc d un nng, dung dch thu c cha

A. NaCl, NaOH, BaCl2. B. NaCl, NaOH.C. NaCl, NaHCO3, NH4Cl, BaCl2. D. NaCl.

25.

Cho s phn ng:

3 3NaCl X NaHCO Y NaNO X v Y c th l

A. NaOH v NaClO. B. Na2CO3 v NaClO.C. NaClO3 v Na2CO3. D. NaOH v Na2CO3.

26.

Khi cho 100 ml dung dch KOH 1M vo 100 ml dung dch HCl thu c dung dch ccha 6,525 gam cht tan. Nng mol ca HCl trong dung dch dng l

A. 1M. B. 0,5M.C. 0,05M. D. 0,25M.

27

.

X, Y, Z l cc hp cht v c ca mt kim loi, khi t nng nhit cao cho ngn

la mu vng. X tc dng vi Y thnh Z. Nung Y nhit cao thu c Z, hinc v kh E. Bit E l hp cht ca cacbon, E tc dng vi X cho Y hoc Z. Vy X,Y, Z, E ln lt l

A. NaOH, Na2CO3, NaHCO3, CO2.B. NaOH, NaHCO3, Na2CO3, CO2.C. NaOH, NaHCO3, CO2, Na2CO3.D. Na2CO3, NaOH, NaHCO3, CO2.

28.

Hin tng xy ra khi cho kim loi Na vo dung dch CuSO4 lA. b mt kim loi c mu , dung dch nht mu.

B. b mt kim loi c mu v c kt ta mu xanh.C. si bt kh khng mu v c kt ta mu xanh.D. si bt kh khng mu v c kt ta mu .

29.

Pht biu no di y khng ng?A. Phng php duy nht iu ch kim loi kim l phng php in phn.B. Kim loi kim c cu hnh electron lp ngoi cng l ns1.C. Kim loi kim c nng lng ion ho I1 nh nht so vi cc kim loi khc nn

kim loi kim c tnh kh rt mnh.D. Ion kim loi kim c tnh oxi ha rt mnh.

30. Phn ng no sau y khng to ra 2 mui?A. CO2 + NaOH d. B. NO2 + NaOH d.C. Ca(HCO3)2 + NaOH d. D. Fe3O4 + HCl d.

31.

Cho s sau: Na X Y Z T Na .Cc cht X, Y, Z, T ln lt l

A. NaOH, Na2SO4, Na2CO3, NaCl.B. Na2CO3, NaOH, Na2SO4, NaCl.C. NaOH, Na2CO3, Na2SO4, NaCl.D. Na2SO4, Na2CO3, NaCl, NaOH.

32.

Trong thng in phn dung dch NaCl iu ch NaOH, cc dng lm bng thanch (graphit). Ngi ta khng dng st v l do no sau y?


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A. Than ch dn in tt hn st.B. Than ch khng b dung dch NaCl ph hu.C. Than ch khng b kh Cl2 n mn.D. Than ch r hn st.

33.

bo qun kim loi kim ngi ta ngm chng trong du ho khan v trung tnh vl do no sau y?

A. Trnh hin tng nng chy ca kim loi kim.B. Trnh tip xc vi hi nc trong khng kh.C. Trnh tip xc vi O2, CO2 trong khng kh.D. Trnh tip xc vi hi nc, O2, CO2 trong khng kh.

34.

Trong cc qu trnh sau y ion Na+ th hin tnh oxi ha hay tnh kh?1. in phn NaOH nng chy.2. in phn dung dch NaOH c mng ngn.3. Nhit phn NaHCO3 nhit cao.

A. 1 v 2 th hin tnh oxi ha; 3 th hin tnh kh.B. 1 th hin tnh oxi ha; 2, 3 th hin tnh kh.C. 1 th hin tnh oxi ha; 2, 3 khng th hin tnh oxi ha v kh.D. 1, 2, 3 u th hin tnh oxi ha.

35.

Trong cng nghip iu ch NaOH ngi ta dng phng php no sau y?A. Cho Na tc dng vi H2O.B. Cho Na2CO3 tc dng vi Ca(OH)2.C. in phn dung dch NaCl c mng ngn.D. Cho Na2O tc dng vi H2O.

36.

Tnh cht no sau y khng phi l tnh cht ca NaHCO3?A. Tnh lng tnh.B. B phn hu bi nhit.C. Thu phn cho mi trng baz yu.D. Thu phn cho mi trng axit yu.

37.

Cho 4,48 lt kh CO2 (ktc) hp th ht vo 500 ml dung dch hn hp NaOH 0,1M vBa(OH)2 0,2M thu c m gam kt ta. Gi tr ca m l

A. 9,85. B. 20,4.C. 19,7. D. 15,2.

38.

Dung dch X cha hn hp NaOH a mol/lt v Ba(OH)2 b mol/lt. trung ho 50 mldung dch X cn 60 ml dung dch HCl 0,1M. Mt khc cho lng d dung dchNa2CO3 vo 100 ml dung dch X c 0,394 gam kt ta. Gi tr ca a, b l

A. a = 0,10; b = 0,01. B. a = 0,10; b = 0,08.C. a = 0,08; b = 0,01. D. a = 0,08; b = 0,02.

39.

C 2 lit dung dch NaCl 0,5M. Khi lng kim loi v th tch kh thu c (ktc) tdung dch trn (hiu sut iu ch t 90%) l

A. 27 gam v 18 lt . B. 20,7 gam v 10,8 lt.C. 10,35 gam v 5,04 lt. D. 31, 05 gam v 15,12.

40.

Cho 100 gam CaCO3 tc dng vi dung dich HCl d. Kh thot ra c hp th vo200 gam dung dch NaOH 30%. Khi lng mui thu c l


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A. 10,6 gam. B. 16,8 gam.C. 95 gam. D. 100,5 gam.

41.

Cho 6 lt hn hp CO2 v N2 (ktc) i qua dung dch NaOH, sau phn ng thu cdung dch X. Cho BaCl2 d vo dung dch X c 2,955 gam kt ta, lc b kt tac dung dch Y. Cho Ba(OH)2 d vo Y li c 11,82 gam kt ta. Phn trm thtch CO2 trong hn hp l

A. 42%. B. 56%.C. 28%. D. 50%.42.

in phn dung dch NaOH vi cng khng i l 10A trong thi gian 268 gi.Sau in phn cn li 100 gam dung dch NaOH 24%. Nng phn trm ca dungdch NaOH trc in phn l

A. 9,6%. B. 4,8%.C. 2,4%. D. 1,2%.

43.

Cho 5 gam hn hp Na, Na2O v tp cht tr tc dng vi H2O c 1,875 lt kh(ktc). Trung ho dung dch sau phn ng cn 100 ml dung dch HCl 2M. Phn trm

tp cht tr lA. 2%. B. 2,8%.C. 5,6%. D. 1,1%.

44.

Cho t t tng git dung dch cha 0,05 mol HCl vo dung dch cha 0,06 molNa2CO3. Th tch kh CO2 (ktc) thot ra l

A. 0,00 lt. B. 1,120 lt.C. 1,344 lt. D. 0,56 lt.

45.

Cho 16,8 lt CO2 (ktc) hp th hon ton vo 600 ml dung dch NaOH 2M thu cdung dch X. Nu cho dung dch BaCl2 d vo dung dch X th thu c bao nhiu

gam kt ta?A. 19,7. B. 88,65.C. 147,75. D. 118,2.

46.

Dung dch X cha 0,6 mol NaHCO3 v 0,3 mol Na2CO3. Thm t t dung dch cha0,8 mol HCl vo dung dch X c dung dch Y v V lt CO2 (ktc). Thm vo dungdch Y nc vi trong d thy to thnh m gam kt ta. Gi tr ca V v m tng ngl

A. 11,2 lt; 90 gam. B. 16,8 lit; 60 gam.C. 11,2 lt; 40 gam. D. 11,2 lit; 60 gam.

47. Thm t t n ht dung dch cha 0,02 mol K2CO3 vo dung dch cha 0,03 molHCl. Th tch kh CO2 (ktc) thot ra lA. 0,448 lt. B. 0,224 lt.C. 0,112 lt. D. 0,336 lt.

48.

Th tch H2 sinh ra khi in phn dung dch cha cng mt lng NaCl c mngngn (1) v khng c mng ngn (2) l

A. Bng nhau. B. (2) gp i (1).C. (1) gp i (2). D. Khng xc nh c

49

.

Trn 150 ml dung dch hn hp gm Na2CO3 1M v K2CO3 0,5M vi 250 ml dung

dch HCl 2M. Th tch CO2 (ktc) thot ra lA. 2,52 lt. B. 5,04 lt.C. 3,36 lt. D. 5,6 lt.


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50.

100 ml dung dch X cha 2,17 gam hn hp gm: NaOH, Na2CO3 v Na2SO4. ChoBaCl2 d vo dung dch X thu c kt ta v dung dch Y. trung ho dung dch Ycn 20 ml dung dch HCl 0,5M. Mt khc, 50 ml dung dch X tc dng va ht vidung dch HCl c 112 ml kh (ktc). Nng mol ca Na2SO4 trong dung dch X l

A. 0,5M. B. 0,05M.C. 0,12M. D. 0,06M.

51. Cho 13,44 lt kh Cl2 (ktc) i qua 2,5 lt dung dch KOH 100

0

C. Sau khi phn ngxy ra hon ton, thu c 37,25 gam KCl. Dung dch KOH dng c nng moll

A. 0,24M. B. 0,48M.C. 0,4M. D. 0,2M.

52.

Trong nhng nhn nh sau, nhn nh no khng n

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Ngan Hang de Thi 2010