When an aqueous solution of sodium sulfate, Na2SO4\text{Na}_2\text{SO}_4Na2SO4, is electrolysed using inert platinum electrodes, gaseous products are liberated at both the cathode and the anode.
Explain, with reference to the ions present and their relative reactivity or ease of discharge, the formation of the products at each electrode.
83 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.