JEE Mains · Chemistry · STD 11 - 7. Redox reactions
Among \(Fe^{3+}\), \(Pb^{2+}\), \(Cu^{2+}\) and \(Mn^{2+}\), identify the one that gets precipitated out while passing \(H_2S\) in presence of \(NH_4OH\) as group reagent. The highest possible oxidation state of the corresponding metal is
- A \(+3\)
- B \(+4\)
- C \(+2\)
- D \(+7\)
Answer & Solution
Correct Answer
(D) \(+7\)
Step-by-step Solution
Detailed explanation
The group reagent \(H_2S\) in the presence of \(NH_4OH\) is used for the precipitation of Group IV cations in qualitative analysis. Among the given ions, \(Mn^{2+}\) belongs to Group IV and is precipitated as \(MnS\). \(Pb^{2+}\) and \(Cu^{2+}\) belong to Group II and are…
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