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Q.

For the redox reactionMnO4- + C2O42- +H+→  Mn2+ + CO2 + H2Othe correct coefficients of the reactants for the balanced reaction are

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a

MnO4-           C2O42-        H+2                       5              16

b

MnO4-           C2O42-        H+16                     5              2

c

MnO4-           C2O42-        H+5                      16              2

d

MnO4-           C2O42-        H+2                      16              5

answer is A.

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Detailed Solution

Mn+7O4-+C+32O4-2→Mn+2+C+4O2 According to Oxidation no. method, change in ox.states are crossmultiplied 2MnO4-+5C2O4-2→Mn+2+CO2 The balanced equation is2MnO42- + 5C2O42- +16H+→  2Mn2+ + 10CO2 + 8H2O
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