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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

`CO_2`

B

`SO_2`

C

HCl

D

KOH

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The correct Answer is:
A
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