1.

The ion that cannot be precipitated by both HCl and H_2 S is

Answer»

`Pb^(2+)`
`Cu^(2+)`
`Ag^(+)`
`Sn^(2+)`

SOLUTION :All except `Cu^(2+)` are precipitated both with HCl with `H_(2)S`. (`Cu^(2+)` is not precipitated with HCl, it is precipitated only with `H_(2)S`)


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