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KMnO(4) acts as an oxidising agent in ac...

`KMnO_(4)` acts as an oxidising agent in acidic medium. The number of moles of `KMnO_(4)` that will be needed to react with one mole of sulphide ions in acidic solution is

A

`2/5`

B

`3/5`

C

`4/5`

D

`1/5`

Text Solution

Verified by Experts

The correct Answer is:
A
The reaction of `KMnO_4` in which it acts as an oxidising agent in acidic medium is

5 moles of `S^(2-)` ions react with 2 moles of `KMnO_4`. So, 1 mole of `S^(2-)` ion will react with `2/5` moles of `KMnO_4`.
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