1 mol of ferric oxalate is oxidized by x mol of MnO−4 and also 1 mol of ferrous oxalate is oxidised by y mol of MnO−4 in acidic medium. The ration xy is:
A
2 : 1
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B
1 : 2
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C
3 : 1
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D
1 : 3
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Solution
The correct option is A 2 : 1 Fe2(204)3+MnO−4→Mn2++Co2 1×6=x×5 x=65 MnO−4+FeC2O4→Mn2++Fe3++Co2 4-factor = 2 + 1 = 3 y×5=1×3 y=35 xy=65/35=2:1