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Question

KMnO4+C2O4H2+H2SO4K2SO4+MnSO4+CO2+H2O
Balance by oxidation number method and ion electron method?

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Solution

+1KM+7nO24++3C2O24H+12+1H26SO241K26SO24+2MnS8O24+4CO22+1H2O2

Oxidation: 3C2O24H1226CO22+2e
Reduction: KMnO4Mn+26SO24

O: C2O4H22CO2+2e+2H+
R: 2KMnO4+3H2SO4+10e+10H+2MnSO4+K2SO4+8H2O

O: 5C2O4H210CO2+10e+10H+
R: 2KMnO4+3H2SO4+10e+10H+2MnSO4+K2SO4+8H2O

5C2O4H2+2KMnO4+3H2SO42MnSO4+10CO2+K2SO4+8H2O .

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