A student predicts the products when four different molten compounds are electrolysed using inert electrodes.
Which prediction is correct?
Molten magnesium chloride: chlorine at the cathode, magnesium at the anode
Molten lithium iodide: lithium at the cathode, iodine at the anode
Molten aluminium oxide: oxygen at the cathode, aluminium at the anode
Molten sodium bromide: hydrogen at the cathode, bromine at the anode
98 exam-style questions on OCR GCSE Chemistry 3.4 Electrolysis, covering 3.4.1 Products formed at the electrodes in electrolysis and 3.4.2 The technique of electrolysis. Each one has a worked solution and a mark scheme showing where the marks go.