Complete and balance the following chemical equations :
(a) `Fe^(2+) + MnO_(4)^(-) + H^(+) to " " ` (b) `MnO_(4)^(-) + H_(2)O + I^(-) to `

Explanation

(a) `2MnO_(4)^(-) + 16 H^(+) + 10Fe^(2+) to 2Mn^(2+) + 8H_(2)O + 10Fe^(3+)`
(b) `" " 2MnO_(4)^(-) + H_(2)O + I^(-) to 2MnO_(2) + 2OH^(-) + IO_(3)^(-)`