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

A dilute aqueous solution of `Na_(2)SO_(4)` is electrolysed using plat

1.	A dilute aqueous solution of `Na_(2)SO_(4)` is electrolysed using platinum electrodes. The products at the anode and cathode areA. `O_(2),H_(2)`B. `S_(2)O_(8)^(2-),Na`C. `O_(2),Na`D. `S_(2)O_(8)^(2-),H_(2)`
Answer» Correct Answer - A `H_(2)O` is more readily reduced at cathode than `Na^(+).` it is also more readily oxidized at anode than `SO_(4)^(2-)`. Hence, the electrode reactions are `2H_(2)O+2e^(-)toH_(2)uarr+2OH^(-)` [at cathode], `H_(2)O to (1)/(2)O_(2)uarr+2H^(+)+2e^(-)` [at anode].

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

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