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
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
Related Questions
State (i) the formation (ii) the components of – a basic salt.
State which of following salts is an – acid, normal or basic salt.
(i) bleaching powder
(ii) potassium mercuric iodide
(iii) sodium sulphite
(iv) sodium hydrogen sulphite
(v) sodium silver cyanide
(vi) basic lead nitrate
(vii) potassium zincate
(viii) alum
(ix) calcium bicarbonate
(x) basic copper chloride
(xi) trisodium phosphate.
Give balanced equations for the preparation of the following salts –
(a) (i) CuSO4
(ii) NaHSO4
(iii) Na2SO4
(iv) FeSO4
(v) BaSO4
(vi) PbSO4 — using dil. H2SO4
(b) (i) NaHSO4
(ii) CuSO4 — using conc. H2SO4
Name three (i) sulphates (ii) chlorides insoluble in water and two (i) oxides (ii) carbonates soluble in water.
Starting from insoluble ZnO how would you obtain insoluble ZnCO3 by precipitation.