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In an acidified aqueous solution of Mn^(...

In an acidified aqueous solution of `Mn^(2+), Ni^(2+), Cu^(2+) and hg^(2+)` ions, `H_2S` gas was passed. Precipitates are

A

`CuS` and `HgS`

B

`MnS` and `NiS`

C

`MnS` and `NiS`

D

`NiS` and `HgS`

Text Solution

Verified by Experts

The correct Answer is:
A
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`.
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RESONANCE ENGLISH-QUALITATIVE ANALYSIS PART 1-EXERCISE 3
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