Q.
In acid solution, the reaction MnO4−⟶Mn2+ involves
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a
gaining of 5 electrons
b
Reduction by 3 electrons
c
Oxidation by 5 electrons
d
Oxidation by 3 electrons
answer is A.
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Detailed Solution
MnO4−→Mn2+. In this reaction 5e−are needed for the reduction of Mn2+ as: MnO4−+5e−→Mn2+