How many moles of KMnO_(4) required to react with (SO_(3)^(-2)) sulphite ion in acidic medium?

How many moles of KMnO_(4) required to react with (SO_(3)^(-2)) sulphi

1.	How many moles of KMnO_(4) required to react with (SO_(3)^(-2)) sulphite ion in acidic medium?
Answer» 1 `1/5` `2/5` `3/5` Solution :`2MnO_(4)^(-)+6H^(+)+5SO_(3)^(-2)to2Mn^(+2)+3H_(2)O+5SO_(4)^(-2)` For 1 MOLE `SO_(3)^(-2),2/5` MOLES `KMnO_(4)` required.