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Question

In alkaline medium H2O2 reacts with Fe3+ and Mn2+ separately to give :

A
Fe3+ and Mn4+
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B
Fe2+ and Mn2+
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C
Fe2+ and Mn4+
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D
Fe3+ and Mn2+
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Solution

The correct option is C Fe2+ and Mn4+
In alkaline medium, H2O2 reduces Fe3+ to Fe2+ and oxidizes Mn2+ to Mn4+.
Fe2(SO4)3+2KOH+H2O22FeSO4+K2SO4+2H2O+O2
MnSO4+H2O2+2NaOHMnO2+Na2SO4+2H2O

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