The number of moles of KMnO_(4) that will be needed to react with one mole of sulphite ion in acidic solution is :

The number of moles of KMnO_(4) that will be needed to react with one

1.	The number of moles of KMnO_(4) that will be needed to react with one mole of sulphite ion in acidic solution is :
Answer» `(4)/(5)` `(2)/(5)` `1` `(3)/(5)` SOLUTION :The redox reaction is : `2MnO_(4)^(-)+5SO_(3)^(2-)+6H^(+) to 2Mn^(2+) + 5SO_(4)^(2-)+3H_(2)O` 1 mole `SO_(3)^(2-)` will be oxidised by `(2)/(5)` mol of `MnO_(4)^(-)`