Which of the following an reaction with `H_(2)S` will produce metal sulphide?

Options

A. `COCl_(2)`
B. `CuCl_(2)`
C. `[Cd(CN)_(4)]^(2-)`
D. `[Zn(OH)_(4)]^(2-)`

Answer

B, C, D

Explanation

B. `CuCl_(2)+H_(2)StoCuS+2HCl`
C. `[Cd(CN)_(4)]^(2-)+H_(2)StoCdS+2H_(+)+4CN^(-)`
D. `(Zn(OH)_(4)]^(2-)+H_(2)StoZnS+2OH^(-)+2H_(2)O`