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.