Question

`H_(2)S` will precipitate the sulphides of all the metals from the solution of chlorides of `Cu,Zn and Cd`, if
A. The solution is aqueous
B. The solution is acidic
C. The solution is dilute acidic
D. Any of these solution is present

Answer 1

Correct Answer - C
Due to common ion effect as
`HCl to H^(+) +Cl^(-),H_(2)Sto2H^(+)+S^(2-)`