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When H(2)S gas is passed through a hot a...

When `H_(2)S` gas is passed through a hot acidic aqueous solution containing `Al^(3+),Cu^(2+),Pb^(2+) and Ni^(2+)`, a precipitate is formed which consists of

A

`Cu^(+2), Ni^(+2)`

B

`Ni^(+2)`

C

`Cu^(+2), Zn^(+2)`

D

`Cu^(+2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Passing of `H_(2)S` gas through the acidified original solution will precipitate the radical `Cu^(2+)` as sulphide .
`CuCl_(2) + H_(2)S to underset("(black ppt)")(CuS) + 2HCl`
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