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The ion that cannot be precipitate by bo...

The ion that cannot be precipitate by both HCI and `H_(2)S` is

A

`Pb^(2+)`

B

`Cu^(+)`

C

`Ag^(+)`

D

`Sn^(2+)`

Text Solution

Verified by Experts

`Cu^(+)` disproportionates in the aqueous solution to a very large extent.
`2Cu^(+)hArrCu^(2+)+Cu`
`K=([Cu^(2+)])/([Cu^(+)]^(2))=1.6xx10^(6)`
Thus, the concentration of `Cu^(+)` ion is very small and hence it cannot be precipitated.
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