Question

The value of x in the following reaction
MnO2 +8H* + xe → Mn+2 +4H,O is​

Answer 1

Answer:

3 e- + MnO4- + 4 H+ → MnO2 + 2 H2O

Explanation:  

This is an oxidation-reduction (redox) reaction:

MnVII + 3 e- → MnIV (reduction)

MnO4- is an oxidizing agent.

Reactants:

e-

MnO4-

H+

Hope it helps :)