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Which of the following statements is cor...

Which of the following statements is corrected about equivalent weight of `KMnO_(4)`?

A

It is one third of its molecular weightin alkaline

B

It is one fifth of its molecular weight in alkaline medium

C

It is equal to its molecular weight in acidic medium

D

It is one third of its molecular weight in acidic medium

Text Solution

Verified by Experts

The correct Answer is:
A
It is one-third of its molecular weight in alkaline medium because it gives 3 nascent oxygen in alkaline medium.
`2KMnO_(4) + H_(2) O overset(+3 e^(-))rarr 2KOH + 2MnO_(2) + 3 [O]`
`:.` Equivalent weight `= (M)/(3)`
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