Chemistry > 2004 > 27
WASSCE
The reaction that takes place at the cathode when an aqueous solution of NaCl is electrolysed using carbon electrodes is
A.
2H+(aq) + 2e- → H2(g)
B.
Na+(aq) + e- → Na(s)
C.
4OH- → 2H2O(l) + O2(g) + 4e-
D.
2Cl- → Cl2(g) + 2e-
Answer: A
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