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Question

Balance the following equations in acidic medium by both oxidation number and ion electron methods and identify the oxidants and the reductants :
MnO4(aq)+C2H2O4(aq)Mn2+(aq)+CO2(g)+H2O(l)

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Solution


MnO4+C2H2O4Mn2+CO2+H2O

+7Mn2O4++3C2+1H22O40Mn2++4C2O2++H22O
Oxidation: +3C21H22O4+4C2O2
Rediuction: +7Mn2O40Mn2
Balancing on both sides;
O:C2H2O42CO2+2H+
R:2MnO4Mn2+8H2O

O:C2H2O42CO2+2H++2e
R:14e+2MnO4+16H+Mn2+8H2O
__________________________________________
7C2H2O414CO2+14H++14e
2MnO4+16H++14eMn2+8H2O
7C2H2O4+2MnO4+16H++14e14CO2+MN2+14H++8H2O+14e
(Refer to Image)

1214109_1105710_ans_3f24546ad9d7490a9c8f0adf15b0b55a.PNG

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