Why can the electrolysis of a solution give different products from the electrolysis of the same compound when molten?
The water makes the ions in the solution move much faster
The water lowers the melting point of the ionic compound
The water provides extra ions that can be discharged instead
The water stops the metal ions from reaching the electrode
40 exam-style questions on AQA GCSE Chemistry 4.3 Electrolysis, covering 4.3.1a The process of electrolysis, 4.3.1b Half equations in 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. Each one has a worked solution and a mark scheme showing where the marks go.