Q2Multiple choice
In qualitative analysis when H2S is passed through an aqueous solution of salt acidified with dil. HCl, a black precipitate is obtained. On boiling the precipitate with dil. HNO3, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives _________.
- (i)deep blue precipitate of Cu (OH)2 2+
- (ii)deep blue solution of [Cu (NH3)4]
- (iii)deep blue solution of Cu(NO3)2
- (iv)deep blue solution of Cu(OH)2.Cu(NO3)2
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(ii) deep blue solution of [Cu (NH3)4]