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Balance the unbalanced redox reaction?

Show the half-reactions and the complete balanced reaction

MnO4-  +  H2O2   --> Mn+2  +  O2  +  H+

1 Answer

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  • 1 month ago

    half-reqctions:

    MnO4^- ---> Mn^2+

    H2O2 ---> O2

    balance half-reactions:

    5e^- + 8H^+ + MnO4^- ---> Mn^2+ + 4H2OH2O2 ---> O2 + 2H^+ + 2e^-

    equalize electrons:

    10e^- + 16H^+ + 2MnO4^- ---> 2Mn^2+ + 8H2O5H2O2 ---> 5O2 + 10H^+ + 10e^-

    add:

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

    You can also do a search. Copy the reactants and the reaction arrow and search. You'll get a number of websites that balance the equation.

    https://www.google.com/search?client=firefox-b-1-d...

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