1.

Electrolysis of aqueous solution of Na_(2)SO_(4) is carried out in presence of graphite electrode.

Answer»

Na is OBTAINED at cathode.
`O_(2)` gas is obtained at cathode.
`H_(2)` gas is obtained at ANODE.
`O_(2)` gas is obtained at anode.

Solution :`Na_(2)SO_(4) to 2Na_((aq))^(+)+SO_(4(aq))^(2-)`
`H_(2)` gas is obtained at cathode on reduction of water, no reduction of `Na^(+)` is OBSERVED on cathode.
`2H_(2)O_((L))+2e^(-) to H_(2(g))+2OH_((aq))^(-)`
`O_(2)` is obtained at anode on OXIDATION of water,
no oxidation is observed on `SO_(4)^(2-)`.
`H_(2)O_((l)) to (1)/(2)O_(2(g))+2H_((aq))^(+)+2e^(-)`.


Discussion

No Comment Found

Related InterviewSolutions