Question 4(a) What do you observe when ammonium hydroxide is added to the aqueous solution of :(i) FeSO4(ii) Iron (III) chloride.(iii) Lead nitrate(iv) Zinc nitrate(b) Write balanced equation for Q.4(a).

Question

Accepted Answer

(i) Dirty green ppt. of ferrous hydroxide is formed which is insoluble in excess of NH₄OH.

(ii) Reddish brown ppt. of ferric hydroxide is formed which is insoluble in excess of NH₄OH.

(iii) White ppt. of lead hydroxide is formed which is insoluble in excess of NH₄OH.

(iv) White gelatinous ppt. of Zinc hydroxide is formed which is soluble in excess of NH₄OH.

(b) The balanced chemical equations are given as :

(i) FeSO₄ + 2NH₄OH ⟶ (NH₄)₂SO₄ + Fe(OH)₂ ↓

(ii) FeCl₃ + 3NH₄OH ⟶ 3NH₄Cl + Fe(OH)₃ ↓

(iii) Pb(NO₃)₂ + 2NH₄OH ⟶ 2NH₄NO₃ + Pb(OH)₂ ↓

(iv) Zn(NO₃)₂ + 2NH₄OH ⟶ 2NH₄NO₃ + Zn(OH)₂ ↓

Study of Compounds — Ammonia — Question 4

Question 4