Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
The electrolysis of some other solutions using inert electrodes
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →An aqueous solution of zinc sulfate is electrolysed using inert electrodes.
State whether hydrogen or zinc is produced at the cathode. Explain your answer using the reactivity series.
Question 2
5 marks · Hard
Answer and see the solution →A student electrolyses separate aqueous solutions containing different anions using inert electrodes.
(a)[1 mark]State which ion produces oxygen gas at the anode when an aqueous solution of sodium sulfate is electrolysed.
(b)[2 marks]Explain why oxygen is produced at the anode during this electrolysis and not another gas.
(c)[2 marks]During the electrolysis of aqueous sodium chloride with inert electrodes, state the product formed at the anode. Explain your answer.
Question 3
2 marks · Hard
Answer and see the solution →Predict the products formed at the electrodes when an aqueous solution of copper(II) bromide is electrolysed using inert electrodes.
State the product formed at:
(a)[1 mark]the cathode
(b)[1 mark]the anode