When concentrated sodium chloride solution (brine) is electrolysed using inert electrodes, chlorine gas is formed at the anode.
Write the half equation for the formation of chlorine gas, Cl2\text{Cl}_2Cl2, from chloride ions, Cl−\text{Cl}^-Cl−.
Practise Edexcel GCSE Chemistry Electrolytic processes with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.