Q15 of 35 Page 1

The products of electrolysis of aqueous NaCl at the respective electrodes are :

Cathode : H2


Anode : Cl2 and not O2. Explain.

On electrolysis of aqueous NaCl, the product at anode is Cl2 not O2 due to overvoltage/ overpotential, Cl- is oxidised in preference to water.


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