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A black sulphide is formed by the action...

A black sulphide is formed by the action of `H_(2)S` on:

A

cupric chloride

B

cadmium chloride

C

zinc chloride

D

ferric chloride

Text Solution

Verified by Experts

The correct Answer is:
A
(A)`Cu^(2+) + S^(2-) to CuS darr`(black),
(B)`Cd^(2) + S^(2-) to CdS darr` (yellow)
( C)`Zn^(2+)+S^(2-) to ZnS darr` (white)
(D)`2Fe^(3+) + H_(2)S to 2Fe^(2+)+2H^(+) +S darr`(milky white)
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