Using Ammonium Hydroxide, How Would You Distinguish Between the Following Pair of Ions in Solution? Ferrous Ion and Ferric Ion. - Chemistry

Short Note
Sum

Using ammonium hydroxide, how would you distinguish between the following pair of ions in solution?
Ferrous ion and Ferric ion.

Solution

Ferrous ion and Ferric ion
(i) $\ce{FeSO4 + 2NH4OH -> Fe(OH)2 v + (NH4)2SO4}$
Fe(OH)2 forms dirty green precipitates.
(ii) $\ce{Fe2(SO4)3 + 6NH4OH -> 2Fe(OH)3 v + 3(NH4)2SO4}$
Fe(OH)3 forms reddish brown precipitates.

Concept: On Solution of Salts - Special Action of Ammonium Hydroxide on Solutions of Copper Salt
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APPEARS IN

Frank ICSE Class 10 Chemistry Part 2
Chapter 4 Analytical Chemistry
Exercise | Q 2.1 | Page 85