A student investigated the electrolysis of copper(II) chloride under different conditions using graphite electrodes.
Explain why electrolysis does not take place when the copper(II) chloride is in a solid state.
Explain why graphite is a suitable material for the electrodes because it conducts electricity. Answer in terms of the structure and bonding in graphite.
During the electrolysis of a copper(II) chloride solution, chlorine gas is produced at the positive electrode (anode). The student collected 15.6 cm315.6\text{ cm}^315.6 cm3 of chlorine gas. Calculate the amount in moles of chlorine gas collected. The volume of one mole of any gas at room temperature and pressure is 24.0 dm324.0\text{ dm}^324.0 dm3. Give your answer in standard form.
12 exam-style questions on AQA GCSE Chemistry 4.3 Electrolysis, covering 4.3.1 The process of electrolysis, 4.3.2 Electrolysis of molten ionic compounds, 4.3.3 Using electrolysis to extract metals, 4.3.4 Electrolysis of aqueous solutions, and 4.3.5 Representation of reactions at electrodes as half equations (HT only). Each one has a worked solution and a mark scheme showing where the marks go.