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

`Mn^(7+) + 5e^(-) to Mn^(2+) ] xx 3`
`{:(Fe^(2+) to Fe^(3+) + e^(-)),(C_(2)O_(4)^(2-) to 2CO_(2) + 2e^(-)):}]xx 5 `
3 moles of `KMnO_(4) = 5 " moles of " FeC_(2)O_(4)`
` :. ` 1 mol of forrous oxalate ` -= 3/5" mol of " KMnO_(4)`