The reaction that takes place at the cathode when an aqueous solution of NaCI is electrolysed using carbon electrodes is
a
2H+2(g) + 2e- → H2(g)
b
Na+2(g) + e- → Na(s)
c
4OH- → 2H2O(l) + O2(g) +4e-
d
2CI- → CI2(g) + 2e-
Explanation
Correct Option
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