In qualitative analysis when `H_(2)S` is passed through an aqueous solution of salt acidified with dil. HCl, a black precipitate is obtained. On boiling the precipitate with dil. `HNO_(3)`, it forms a solution of blue colour. Addition of excess of aqueous solution of ammonia to this solution gives

In qualitative analysis when H_(2)S is passed through an aqueous solution of salt acidified with dil. HCL, a block precipitate is obtainned .On boiling the precipitate with dil. HNO_(3) it forms a solution of blue colour . Addition of excess of aqueous solution of ammonia to this solution given ....... .

In qualitative analysis, a black precipitate is obtained when H_(2)S is passed through an acidified aqueous solution of a salt . A blue coloured solution is obtained on boiling the preciptate with dilute HNO_(3) . The substance obtained on addition of excess of ammonia solution to this blue solution is -

When H_2S is passed through acidified CuSO_4 solution, a black precipitate is formed due to

In salt solution when H_(2)S pass in presence of dil HCl , a orange color precipitate obtained.Radical & composition of precipitate will be

In salt solution when H_(2)S pass in presence of dil HCl , a orange color precipitate obtained.Radical & composition of precipitate will be