Chemistry
State the method only, generally used for the preparation of the following salts
(i) Zn(NO3)2
(ii) NH4Cl
(iii) ZnSO4
(iv) ZnS
(v) CaCO3
(vi) FeCl3
(vii) PbCl2
(viii) Pb(NO3)2
Acids Bases Salts
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Answer
Method of preparation are as follows :
(i) Zn(NO3)2 — By action of dilute acids on carbonate.
(ii) NH4Cl — By neutralisation of an alkali (titration)
(iii) ZnSO4 — By displacement of active metal and acid
(iv) ZnS — Direct combination (Synthesis)
(v) CaCO3 — By precipitation (double decomposition)
(vi) FeCl3 — Direct combination (Synthesis)
(vii) PbCl2 — Precipitation (double decomposition)
(viii) Pb(NO3)2 — Action of dil. acid on carbonates and bicarbonates
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