The number of moles of `KMnO_(4)` that will be needed to react completely with one mole of ferrous oxalate in acidic solution is:

Options

A. `3//5`
B. `2//5`
C. `4//5`
D. 1

Answer

A

Explanation

`Fe^(2+)+C_2O_4^(2-) to Fe^(3+)+2CO_2+3e^(-)`
`MnO_4^(-)+5e^(-) to Mn^(2+)`
1 mole of `KMnO_4` accpts 5 electrons
1 mole of ferrous oxalate loses 3 electrons
`5e^(-)-=1` mole of `KMnO_4`
`3e^(-)` will equivalent to 3/5 mole of `KMnO_4`