QUESTION 9 (Start on a new page.)
Chlorine is produced industrially by the electrolysis of a concentrated sodium chloride
solution, NaCℓ(aq).
The balanced equation for the net (overall) cell reaction is as follows:
9.1 Define the term electrolysis. (2)
9.2 For the above reaction, write down the:
9.2.1 Half-reaction that takes place at the cathode (2)
9.2.2 NAME or FORMULA of the oxidising agent (1)
9.3 Refer to the Table of Standard Reduction Potentials to explain why sodium
ions are not reduced during this process. (3)
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