Question

Differentiate between:

Aqueous ferrous and ferric sulphate solution

Answer 1

Aqueous ferrous	Ferric sulphate solution
When ammonium solution is added to aqueous solution of ferrous sulphate a dirty green precipi tate of ferrous hydroxide is obtained which is insoluble in excess of ammonium solution. Hydroxide.  \[\ce{FeSO4 + 2NH4OH -> (NH4)2SO4 + Fe(OH)2}\]	On adding ammonium solution to ferric sulphate solution we get ammonium sulphate and reddish brown precipi tate of ferric hydroxide which is insoluble in excess of ammonium solution . \[\ce{Fe2(SO4)3 + 6NH4OH -> 3(NH4)2SO4 + 2Fe(OH)3}\]