`O_(3)` is a powerful oxidising agent. Write equation to represent oxidation of
(a)`I^(-)` to `I_(2)` in acidic solution,
(b)sulphur to sulphuric acid in the presence of moisture,

Explanation

(a) `O_(3) + 2I^(-) + 2H^(+) rarr O_(2) + I_(2) + H_(2)O` , (b) `3O_(3) + S + H_(2) O rarr H_(2)SO_(4) + 3O_(2)`