Q3Multiple choice
In a qualitative analysis when H2S is passed through the solution of a salt acidified with 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 will give ________. (1)
- (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] .