A teacher demonstrates the electrolysis of molten lead bromide in a fume cupboard. Graphite electrodes are used.
Give a reason why the demonstration is carried out in a fume cupboard.
Explain why the lead bromide must be molten.
Name the product formed at the cathode.
Name the product formed at the anode.
Describe what the teacher would see at the anode.
Predict the products at each electrode when molten zinc chloride is electrolysed.
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.