Question

KMnO4 can be prepared from K2MnO4 as per the reaction:
$3MnO^{2-}_4+2H_2O⇌2MnO^-_4+MnO_2+4OH^-$
The reaction can go to completion by removing OH- ions by adding

• A. HCl
• B. KOH
• C. CO2
• D. SO2

Answer 1

Answer: (C)

CO2

Answer 2

The correct option is (C): CO2.