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Question

For the redox reaction,
MnO4+C2O24+H+Mn2++CO2+H2O, the correct coefficients of the reactants, i.e. MnO4,C2O24,H+ for the balanced reaction are respectively :

A
2,5,16
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B
16,3,12
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C
15,16,12
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D
2,16,5
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Solution

The correct option is A 2,5,16
MnO4Mn2+MnO4+H+Mn2++H2OMnO4+8H+Mn2++4H2OMnO4+8H++5eMn2++4H2O.........(1)C2O242CO2+2e........(2)
For balacing the reaction
2×equation(1)+5×equation (2), we get
2MnO4+5C2O24+16H+2Mn2++10CO2+8H2O

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