The number of moles of KMnO_4 that are needed to react completely with one mole of ferrous oxalate in acidic solution is

The number of moles of KMnO_4 that are needed to react completely with

1.	The number of moles of KMnO_4 that are needed to react completely with one mole of ferrous oxalate in acidic solution is
Answer» `1/5` `2/5` `3/5` `5/3` Solution :`KMnO_(4)` oxidises both `Fe^(2+)` as well as `C_(2)O_(4)^(2-)` ions. `Fe^(2+) to Fe^(3+) + e^(-)` `C_(2)O_(4)^(2-) to 2CO_(2) + 2e^(-)` `MnO_(4)^(-) + 8H^(+) + 5E^(-) to Mn^(2+) + 4H_(2)O` The OVERALL reaction is: `5Fe^(2+) + 5C_(2)O_(4)^(2-) + 3MnO_(4)^(-) + 24H^(+) to 3Mn^(2+) + 5Fe^(3+) + 10 CO_(2) + 12H_(2)O` Obviously, 5 moles of ferrous OXALATE react with 3 moles of `KMnO_4`. Hence, ONE mole of ferrous oxalate will react with `3/5` moles of `KMnO_(4)`.