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. `SO_(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. `SO_(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 than `Na^(+)`. It is also readily oxidized than `SO_(4)^(2-)`. Hence, the electrode reactions are: At cathode:`2H_(2)O+2e^(-)toH_(2)+2OH^(-)` At anode: `2H_(2)toO_(2)+4H^(+)+4e^(-)`

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What are elementary reactions ?

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. `SO_(2),Na`C. `O_(2),Na`D. `S_(2)O_(8)^(2-),H_(2)`

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