1.

Which of the followingpairs of ionscannotbe seprated by H_(2)S indilate HCl?

Answer»

`Bi^(3+) ,Sn^(4+)`
`Al^(3+) ,Hg^(2+)`
`ZN^(2+) ,CU^(2+)`
`Ni^(2+) ,Cu^(2+)`

Solution :In the presence of HCI both ions are precipitate by `H_(2)S`
`Bi^(3+) + H_(2)S overset(HCI) to underset(BROWN)(Bi_(2)S_(3))DARR `
`Sn^(4+) + H_(2)S overset(HCI) to underset(yellow)(SnS_(2) darr)


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