Q.

The products of electrolysis of aqueous NaCl solution are

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Na at cathode and Cl2 at anode

H2 at cathode and Cl2 at anode

H2 at cathode and O2 at anode

Na at cathode and O2 at anode

answer is B.

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Detailed Solution

At cathode;Discharge potential of H2O is less than Na+ or SRP of H2O is greater than Na+.H2O is preferentially reduced.At Anode :Discharge potential of H2O is less than Cl- or SOP of H2O is greater than Cl-.Cl- is preferentially Oxidised.Note: If the electrolyte is very dilute insted of Cl2 at anode O2 is liberated at anode.

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