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When H(2)S gas is passed thorugh the HCl...

When `H_(2)S` gas is passed thorugh the HCl containing aqueous solution of `CuCl_2,HgCl_(2),BiCl_(3)` and `CoCl_(2)`, it does not precipitated out

A

CuS

B

HgS

C

`Bi_(2)S_(3)`

D

CoS

Text Solution

Verified by Experts

The correct Answer is:
D
`K_(sp)` Value of sulphides of group IV are high , hence precipitation takes places in higer `[S^(2-)]`. Acidic medium decrease ionization of `H_(2)S`, hence precipitation of CoS will not occur.
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