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For decolourisation of 1 mole of acidifi...

For decolourisation of 1 mole of acidified `KMnO_(4)` the moles of `H_(2)O_(2)` required are

A

`1//2`

B

`3//2`

C

`5//2`

D

`7//2`

Text Solution

Verified by Experts

The correct Answer is:
C
`2KMnO_(4)+3H_(2)SO_(4)rarrK_(2)SO_(4)+2MnSO_(4)+3H_(2)O+5[O]H_(2)O_(2)+OrarrH_(2)O+O_(2)xx5`
Thus 1 mole of acidified `KMnO_(4)` requires 5/2 moles of `H_(2)O_(2)` for decolourisation.
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