For the redox reaction,
`MnO_(4)^(-) + C_(2)O_(4)^(2-) + H^(+) rarr Mn^(2+) + CO_(2) + H_(2)O`
the correct coefficients of the reactants for the balanced reaction are

Options

A. `{:(,,MnO_(4)^(-),C_(2)O_(4)^(-),H^(+)),(,1,2,5,16):}`
B. `{:(,,MnO_(4)^(-),C_(2)O_(4)^(-),H^(+)),(,2,16,5,2):}`
C. `{:(,,MnO_(4)^(-),C_(2)O_(4)^(-),H^(+)),(,3,5,16,2):}`
D. `{:(,,MnO_(4)^(-),C_(2)O_(4)^(-),H^(+)),(,4,2,16,5):}`

Answer

A

Explanation

Oxidation state of I in `HIO_(4)`
1+x+4(-2)=0
Oxidation state of I in `H_(3)IO_(5)`
`3+x+5(-2)=0`
Oxidation state of I in `H_(5)IO_(6)`
5+x+6(-2)=0 x=+7