Question

A dilute aqueous solution of `Na_(2)SO_(4)` is electrolyzed using platinum electrodes. The products at the anode and cathode are :
A. `O_(2), H_(2)`
B. `S_(2)O_(8)^(2-), Na`
C. `O_(2), Na`
D. `S_(2)O_(8)^(2-), H_(2)`

Answer 1

Correct Answer - A
Anode : `2OH^(-) rarr H_(2)O + 1//2O_(2) + 2e`
Cathode: `2H^(+) + 2e rarr H_(2)`