1.

H_(2)S will precipitate the sulphide of all the metals from the solution of chlorides of Cu,Zn and Cd if:

Answer»

The solution is aqueous
The solution is acidic
The solution is DILUTE acidic
Any of these solution is present

Solution :DUE to COMMON ION EFFECT as
`HCl to H^(+) +Cl^(-),H_(2)Sto2H^(+)+S^(2-)`


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