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Passing $H_2 S$ gas into a mixture of $Mn^{2+}, Ni^{2+}, Cu^{2+}$ and $Hg^{2+}$ ions in an acidified aqueous solution precipitates
Passing $H_2 S$ gas into a mixture of $Mn^{2+}, Ni^{2+}, Cu^{2+}$ and $Hg^{2+}$ ions in an acidified aqueous solution precipitates
Updated On: Jun 14, 2022
- CuS and HgS
- MnS and CuS
- MnS and NiS
- NiS and HgS
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The Correct Option is A
Solution and Explanation
In acidic medium, $H_2 S$ is very feebly ionised giving very small concentration of sulphide ion for precipitation. Therefore, the most insoluble salts CuS and HgS are precipitated only.
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