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Oxidation Number Method

During the ti...

Question

During the titration of $K M n O_{4}$ with oxalic acid in acid medium, the oxidation number of $M n^{7 +}$ changes to:

A

+ 2

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B

+ 3

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C

+ 5

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D

6

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Solution

The correct option is A + 2
In this titration, $M n^{7 +}$ changes to $M n^{2 +}$ , because the medium is acidic.

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