1. NaOH solution when added to the solution ‘A’ gives a reddish brown precipitate.

Question

Identify the cations in each of the following cases : 

1. NaOH solution when added to the solution ‘A’ gives a reddish brown precipitate. 

2. NH₄OH solution when added to the solution ‘B’ gives white ppt which does not dissolve in excess. 

3. NaOH solution when added to the solution ‘C’ gives white ppt which is insoluble in excess.

Answer 1

1. Ferric (Fe³⁺ ) ion 

2. Plumbous (Pb²⁺ ) ion 

3. Calcium (Ca²⁺ ) ion