Copper chloride solution is electrolysed using inert electrodes.
Statement 1: at the cathode, copper ions are reduced because they gain electrons
Statement 2: at the anode, chloride ions are oxidised because they gain electrons
Statement 3: in any period of time, the number of electrons lost at the anode equals the number gained at the cathode
Statement 4: for every mole of copper formed, two moles of chlorine gas are formed
Which statements are correct?
1 and 3 only
1 and 4 only
1, 3 and 4 only
2 and 3 only
52 exam-style questions on Edexcel GCSE Chemistry 4.2 Electrolytic processes, covering 4.2.1 Electrolytes and the process of electrolysis, 4.2.2 Products of electrolysis using inert electrodes, 4.2.3 Half equations, oxidation and reduction in electrolysis, and 4.2.4 Electrolysis of copper sulfate and purifying copper. Each one has a worked solution and a mark scheme showing where the marks go.