Salts and its applications final
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- 1. CHEMISTRY P.P.T ON SALTS AND ITS APPLICATIONS
- 2. THE TEAM MEMBERS Raghavendran Rahul Gaur Sanni Booshan
Pranav Satish Kanth
- 3. Salt and its applications
- 4. Preparation Salt.
- 5. Silver Chloride Lead(II) Iodide
- 6. INSOLUBLE SALTS
- 7. 1. Definition 2. Preparation of Insoluble Salts 3. Example
of Insoluble Salts
- 8. DEFINITION Solubility of a salt is usually tested by
dissolving a little bit of the salt in distilled water. Salts that
cannot dissolve in water at the room temperature (27oC) are called
insoluble salts.
- 9. PREPARATION OF INSOLUBLE SALTS Insoluble salts can be
prepared through precipitation method or double decomposition
reactions.
- 10. PRECIPITATION METHOD / DOUBLE DECOMPOSITION REACTIONS Two
aqueous solutions/soluble salts were mixed together One of the
solutions contains the cations of the insoluble salt. One of the
solutions contains the anions of the insoluble salt.
- 11. The ions of the two aqueous solutions above interchange to
produce two new compound which is insoluble salt or precipitate,
and aqueous solution. The precipitate produced is obtained by
filtration. The residue left in the filter paper is the insoluble
salt. The filtrate is soluble salt. continue
- 12. The residue/precipitate (insoluble salt) then rinsed with
distilled water to remove any other ions as impurities. Anion
(Non-metal ion) Cation (Metal ion) nn mm Chemical : MX(aq) + NY(aq)
MY(s) + NX(aq) equation solution solution precipitate solution
Ionic : M+(aq) + Y-(aq) MY(s) equation continue
- 13. IONIC PRECIPITATION OF LEAD(II) CHLORIDE Na+ Na+ NO3 - NO3
- PbCl2 Pb2+ ions combined with Cl- ions to form white precipitate
Na+ ions and NO3 - ions do not take part in the reaction and are
free to move in the solution Ionic equation : Pb2+ + 2Cl- PbCl2
Pb(NO3)2 solution (supplies the cation) NaCl solution (supplies the
anion)
- 14. Glass rod PbCl2 salt (the residue/precipitate) NaNO3
solution Mixture of solutions Pb(NO3)2 + NaCl Filter funnel Filter
paper Retort stand continue
- 15. Glass rod Distilled water Precipitate of lead(II) chloride
Retort stand continue
- 16. CHEMICAL AND IONIC EQUATIONS In the formation of the
precipitate of lead(II) chloride, PbCl2, the chemical equation can
be written: Pb(NO3)2 (aq) + NaCl (aq) PbCl2(s) + NaNO3 (aq) Pb2+ +
NO3- + Na+ + Cl - PbCl2 + Na+ + NO3- Ionic equation : Pb2+ (aq) +
Cl - (aq) PbCl2 (s) continue
- 17. EXAMPLE OF THE INSOLUBLE SALTS Insoluble Salt Ions Ionic
equation ZnCO3 Zn2+ , CO3 2- Zn2+ + CO3 2- ZnCO3 AgCl Ag+ , Cl- Ag+
+ Cl- AgCl BaSO4 Ba2+ , SO4 2- Ba2+ + SO4 2 BaSO4 PbCl2 Pb2+ , Cl-
Pb2+ + Cl- PbCl2 PbSO4 Pb2+ , SO4 2- Pb2+ + SO4 2- PbSO4 CaCO3 Ca2+
, CO3 2- Ca2+ + CO3 2- CaCO3