JAMB - Chemistry (1993 - No. 18)

Which of the reactions occurs at the anode during the electrolysis of a very dilute aqueous solution of sodium chloride?

OH^- - e → OH

CIsup>- - e → CI

OHsup>- + CIsup>-HCI + O₂

Na₊ - esup>- Hg (Na)/(Hg) amalgam