Answer :

The following reactions take place when acidulated water is electrolysed.

Anode: 2H2O(l) O2(g) + 4H+ (aq) + 4e


Cathode: 4H+ + 4e- 2H2


Overall cell reaction: 2H2O(l) O2(g) + 2H2(g)


pH remains the same because concentration of H+ ions remains constant.


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