A current of `0.5 A` is passed through acidulated water for `30` minute. Calculate weight of `H_(2)` and `O_(2)` evolved. Also calculate the volume of `O_(2)` produced at `25^(@)C` and `760` mm of `Hg`, if the gas is :
(a) dry
(b) saturated with water vapour (aqueous tension is `23.0` mm at `25^(@)C`).

Answer

`H_(2) = 9.33 xx 10^(-3)g`,
`O_(2) = 7.46 xx 10^(-2)g`,
(a) `5.7 xx 10^(-2)` litre, (b) `5.88 xx 10^(-2)` litre;