1.

Passing H_(2)S gas into a mixture of Mn^(2+) , Ni^(2+) , Cu^(2+) and Hg^(2+) ions in an acidified aqueous solution precipitatates:

Answer»

`CuS` and `HgS`
`MnS` and `NiS`
`MnS` and `NiS`
`NiS` and `HgS`

SOLUTION :In presence of acidic MEDIUM, IONISATION of `H_(2)S` is supressed to less number of `S^(2-)` ions are produces.So only those sulphides are PRECIPITATED which have low solubility PRODUCT `(K_(sp))` value, For example `CuS` and `HgS`.


Discussion

No Comment Found

Related InterviewSolutions