KMnO4+H2SO4+H2O+H2O2 will yield to?

Question

is this a redox reaction?

Answer 1

Hmmm.... I think another way to put it is 2H2SO4   +    2 KMnO4      +     H2O2 ----------> 2 K2SO4      +    2 MnO2      +     2 H2O

although I'm not really sure. I'm also having problem with this and all I know is that Mn is the Oxidizing agent but I can't seem to find the Reducing agent

Answer 2

yes this is a redox titration & used to determine the strength of Hydrogen peroxide that is H2O2

Answer 3

Oh yes. This is definitely a redox reaction, and it is one  which I use with my AP students to study kinetics and redox reactions. In really dilute solutions of KMnO4 the reaction may take up to a minute to occur, and then changes rapidly to a colorless solution with the evolution of O2 gas (much like a clock reaction). The interesting thing is that it is self-catalyzing. The formation of Mn2+ catalyzes the formation of more Mn2+ very quickly.

KMnO4 + H2O2 + H2SO4 --> ???

This makes a lot more sense if we leave out the spectator ions.

2(8H+ + MnO4- + 5e- --> Mn2+ + 4H2O)

5(H2O2 --> O2 + 2H+ + 2e-)

--------------------------------------...

16H+ + 2MnO4- + 5H2O2 --> 2Mn2+ + 5O2 + 8H2O + 10H+

Simplify

6H+ + 2MnO4- + 5H2O2 --> 2Mn2+ + 5O2 + 8H2O

2KMnO4 + 5H2O2 + 3H2SO4 --> 2MnSO4 + K2SO4 + 5O2 + 8H2O