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Chemistry - Salt Analysis Question with Solution | TestHub

ChemistrySalt AnalysisTEST OF CATIONS Dry Test, Group Analysis, Group 1,2Medium2 minPYQ_2011

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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

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Answer:

Solution:

In acidic medium, $H_{2} S$ is very feebly ionized giving very small concentration of sulphide ion for precipitation. Therefore, the most insoluble salts $CuS$ and $HgS$ are precipitated only.

Stream:JEE_ADVSubject:ChemistryTopic:Salt AnalysisSubtopic:TEST OF CATIONS Dry Test, Group Analysis, Group 1,2

⏱ 2mℹ️ Source: PYQ_2011

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