Oxidising H2O2 with KMnO4: What Happens?

[garytse86]

What do you get if you use KMnO4 to oxidise hydrogen peroxide?

and what happens to hydrogen peroxide if it is used as an oxidiser?

Surely the second one there are two possibilities:

1) H2O2 + 2e- --> 2OH-
2) H2O2 + 2H+ + 2e- --> 2H2O

 

[Bladibla]

*deleted*...

 

[Borek]

Hydrogen peroxide may act as oxidizer (in alkalic solution) or as a reducer (in acidic solution).

 

[garytse86]

Thanks, but I want to know what hydrogen peroxide itself changes to?

 

[Guillermo]

In reduction

H2O2 + 2H+ + 2e -> 2H2O

In oxidation

H2O2 +2OH- -> O2 + 2H2O + 2e

G

 

[garytse86]

k. so when does this happen:

H2O2 + 2e- --> 2OH-

 

[Borek]

Add 2H+ on both sides of equation