1. Chng 7 TC PHN NG V CN BNG HA HC Tc phn ng Cn bng ha hc
2. Bi 50: CN BNG HA HC Phn ng mt chiu K Phn ng thun nghch nh
ngha Hng s cn bng S chuyn dch cn bng Cc yu t nh hng ngha
3. S CHUYN DCH CN BNG V D TH NGHIM HIN TNG & GII THCH NH
NGHA 2NO2 N2O4 Nu Khng mu
4. S CHUYN DCH CN BNG V D TH NGHIM HIN TNG & GII THCH NH
NGHA
5. S CHUYN DCH CN BNG V D TH NGHIM HIN TNG & GII THCH NH
NGHA Hin tng: ng nghim ngm trong nc c mu nht hn Gii thch: Cc phn t
NO2 (nu ) phn ng vi nhau to ra N2O4 (khng mu) nng NO2 gim, nng N2O4
tng S CHUYN DCH CN BNG HA HC
6. S CHUYN DCH CN BNG V D TH NGHIM HIN TNG & GII THCH NH
NGHA S chuyn dch cn bng ha hc l s di chuyn t trng thi cn bng ny
sang trng thi cn bng khc do tc ng ca cc yu t t bn ngoi ln cn bng
Nhng yu t lm chuyn dch cn bng l Nhit Nng p sut
7. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
TH NGHIM: N2 + 3H2 2NH3 SO SNH HNH (a) V HNH (c)?
8. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
Nhn xt: Tng s mol N2 cn bng chuyn dch v bn pi (to NH3) Kt lun: Khi
tng hoc gim nng mt cht trong h cn bng, cn bng s chuyn dch theo chiu
lm gim tc ng ca vic tng hoc gim
9. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
2NO2 N2O4 TNG P SUT GIM P SUT
10. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
Nhn xt: Phn ng thun: gim s mol gim p sut Phn ng nghch: tng s mol
tng p sut trng thi cn bng Tng p sut h (nn pit-tng): cn bng chuyn v
chiu thun (chiu gim p) Gim p sut h: cn bng chuyn dch theo chiu
nghch (chiu tng p)
11. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
Khi thay i p sut ca h cn bng, cn bng s dch chuyn theo chiu lm gim
tc ng ca s thay i Khi no p sut khng nh hng ti h cn bng? H khng c
cht kh S mol kh 2 v ca phng trnh bng nhau
12. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
Th nghim N2O4 NO2 H= 58 kJ > 0 thu nhit GII THCH?
13. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
Phn ng thun: thu nhit (H > 0) Phn ng nghch: ta nhit (H < 0)
trng thi cn bng: Tng nhit (un nng): cn bng chuyn dch theo chiu thun
(to NO2) Gim nhit (lm lnh): cn bng chuyn dch theo chiu nghch (to
N2O4) Khi tng nhit , cn bng chuyn dch theo chiu phn ng thu nhit
(chng li s tng nhit) Khi gim nhit , cn bng chuyn dch theo chiu phn
ng ta nhit (chng li s gim nhit)
14. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
p sutNhit Nng NGUYN L L SA-T-LI-E Mt phn ng thun nghch ang trng thi
cn bng khi chu ng mt tc ng t bn ngoi, nh s bin i v nng , nhit , p
sut th cn bng s chuyn dch theo chiu lm gim tc ng bn ngoi
15. Hon thnh phiu hc tp s 1
16. CC YU T NH HNG NNG P SUT NHIT NGUYN L L SA-T-LI-E CHT XC TC
CHT XC TC Khng bin i nng cc cht Tng tc phn ng thun v nghch nh nhau
Khng bin i hng s cn bng KHNG LM CHUYN DCH CN BNG
17. NGHA TRONG SN XUT HA HC Thay i cc yu t: nhit , nng , p sut,
cht xc tc TNG TC PHN NG TNG HIU SUT PHN NG HON THNH PHIU HC TP S
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