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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 weight in alkaline medium

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)Ooverset(+3e^(-))rarr2KOH+2MnO_(2)+3[O]`
`therefore" Equivalent weight"=(M)/(3)`
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