On reduction of KMnO4 by oxalic acid in acidic medium, the oxidation number of Mn changes. What is the magnitude of this change?

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From 7 to 2

From 6 to 2

From 7 to 4

From 5 to 2

answer is A.

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Detailed Solution

Mn changes oxidation number from +7 to +2 On reduction of KMnO4 by oxalic acid in acidic medium.MnO4-→Mn2+

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