In qualitative analysis when H2S is passed through an aqueous solution of salt acidified with dil. HCl,
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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 _________.
Answer:
deep blue solution of [Cu (NH3)4]2+
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 _________.
Answer:
deep blue solution of [Cu (NH3)4]2+
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