Write the balanced ionic equation for the oxidation of sulphite ions to sulphate ions in acid medium by permanganate ion.

Explanation

`MnO_(4)^(-)+SO_(3)^(-2)to Mn^(+2)+SO_(4)^(-2)`
Red. Half cell
`MnO_(4)^(-)to Mn^(+2)`
`MnO_(4)^(-)to Mn^(+2)+4 H_(2)O`
`MnO_(4)^(-)+8H^(+)to Mn^(+2)+4H_(2)O` (Charge balanced)
`overset(2MnO_(4)^(-)+16H^(+)+10^(-)to 2Mn^(+2)+8H_(2)O)(5SO_(3)^(-2)+5H2O to 5SO_(4)^(-2)+10H^(+)+10e^(-))/underline(2MnO_(4)^(-2)+5SO_(3)^(-2)+6H^(+)to 2M^(+2)+5SO_(4)^(-2)+3H_(2)O)`
Ox.half cell
`SO_(3)^(-2)to SO_(4)^(-2)`
`SO_(3)^(-2)+H_(2)O to SO_(4)^(-2)`
(oxygens balanced)
`SO_(3)^(-2)+H_(2)O to SO_(4)^(-2)+2H^(+)`
(Hydrogens balanced)
`SO_(3)^(-2)+H_(2)O to SO_(4)^(-2)+2H^(+)+2e^(-)`