How much electricity is required in coulomb for the oxidation of
(i) 1 mole of `H_(2)O` to `O_(2)` ?
(ii) 1 mole of FeO to `Fe_(2) O_(3)` ?

Explanation

(i) `H_(2) O rarr 2H^(+) + ( 1)/( 2) O_(2) + 2e^(-)`
`:.` The electricity required for the oxidation for 1 mole of `H_(2)O` is 2F `= 2 xx 96500C`
`= 193000C = 1.93 xx 10^(5) C`
(ii) `FeOrarr (1)/( 2) Fe_(2) O_(3)`
i.e. `underset( "1 mol") ( Fe^(2+)) rarr Fe^(3+) + underset( 1F) (e^(-))`
`:.` The electricity required is `1F = 1 xx 96500C`
= 96500C