MnO4- oxidizes H2O2 to  O2 in acidic medium XMnO4- + yH2O2 + zH+ →  Mn2+ + O2 + H2OCoefficients x, y and z are respectively

MnO4- oxidizes H2O2 to  O2 in acidic medium

xMnO4- + yH2O2 + zH+   Mn2+ + O2 + H2O

Coefficients x, y and z are respectively

  1. A

    X       y       z

    1       2       3

  2. B

    X       y       z

    3       2       5

  3. C

    X       y       z

    2       6       5

  4. D

    X       y       z

    2       5       6

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    Solution:

     

    Cross-multiply by change in oxidation number and balanced H by H+ ions.

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

    Thus, x = 2, y = 5 and z = 6.

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