ICSE Class 10 Chemistry Question 8 of 28

Acids, Bases and Salts — Question 23

Back to all questions
23
Question

Question 23

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

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