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Question

Calculate the n-factor of KMnO4?


A

5

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B

3

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C

1

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D

All of the above

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Solution

The correct option is D

All of the above


The n-factor of KMnO4 varies depending on the type of solution where the reaction takes place and we calculate it based on change in oxidation state.

(i) In acidic medium: (+7) (+2)KMnO4 Mn+2Valence factor=5(ii)In basic medium: +7 +2(KMnO4)(Mn+6)Valence factor=1(iii)Neutral medium: (+7) (+2)KMnO4 Mn+4Valence factor=3


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