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

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

1.	The number of moles of KNnO_(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 ionic equation for the reaction is : `2MnO_(4)^(-)+6H^(+)+5SO_(3)^(2-)rarr2Mn^(2+)+5SO_(4)^(2-)+3H_(2)O` 5 mole of `SO_(3)^(2-)` IONS are oxidised by `MnO_(4)^(-)` ions = 2 MOL 1 mole of `SO_(3)^(2-)` ions is oxidised by `MnO_(4)^(-)` ions = 2/5 mol.