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KMnO4 can be prepared fromK2MnO4 as per ...

`KMnO_4` can be prepared from`K_2MnO_4` as per the reaction:
The reaction can go the completion by removing `OH^(ɵ)` ions by adding.

A

`KOH`

B

`CO_(2)`

C

`SO_(2)`

D

`HCl`

Text Solution

Verified by Experts

The correct Answer is:
B
HCl and `SO_(2)` are reducing agents and can reduce `MnO_(4)^(-). CO_(2)` which is neither oxidising and nor reducing will provide only acidic medium. It can shift reaction in forward direction and reaction can go to completion.
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