An investigation is carried out on the electrolysis of zinc chloride under various experimental setups using inert graphite electrodes.
Explain why electrical current does not flow through zinc chloride when it is in the solid state.
Explain, in terms of its structure and bonding, how graphite is able to conduct electricity, making it an appropriate material for these electrodes.
When a concentrated solution of zinc chloride is electrolysed, chlorine gas is evolved at the anode (positive electrode). During one run of this experiment, a student collects 16.8 cm316.8\text{ cm}^316.8 cm3 of chlorine gas at room temperature and pressure (RTP). Calculate the amount, in moles, of chlorine gas collected. The molar volume of any gas at RTP is 24.0 dm3/mol24.0\text{ dm}^3\text{/mol}24.0 dm3/mol. Give your final answer in standard form.