Electrochemistry: past paper questions
Real questions on electrochemistry
The newest 20 of 113 written questions, plus 85 multiple-choice. Open one to see it on the real paper.
- 0971/32 · May/June 2026 · Q6d(i)[1]
(i) Name a non-metal that is used as an inert electrode. doce .......... .......... [1]
See it on the paper → - 0971/32 · May/June 2026 · Q6d(ii)[3]
(ii) Name the products formed at each electrode during the electrolysis of molten nickel(II) bromide, and give the observations at the positive electrode. product negative electrode .......... product positive CleCtrode .......... observations positive Clectrode ..........
See it on the paper → - 0971/32 · October/November 2025 · Q7a[1]
Name the process shown in Fig. 7.1.
See it on the paper → - 0971/32 · October/November 2025 · Q7b[1]
Label the electrolyte in Fig. 7.1.
See it on the paper → - 0971/32 · October/November 2025 · Q7c[1]
Name the product formed at the anode.
See it on the paper → - 0971/32 · October/November 2025 · Q7d(i)[1]
State one property of platinum that makes it suitable for use as an electrode.
See it on the paper → - 0971/32 · October/November 2025 · Q7d(ii)[1]
Suggest a non-metal that could be used as the electrodes.
See it on the paper → - 0971/32 · October/November 2025 · Q7e[1]
State whether the process shown in Fig. 7.1 produces a physical or chemical change. Explain your answer. type of change explanation
See it on the paper → - 0971/42 · October/November 2025 · Q4a(vi)[2]
Name the two gaseous products formed during the electrolysis of dilute sulfuric acid using inert electrodes. and
See it on the paper → - 0971/31 · May/June 2025 · Q6c(i)[2]
Fig. 6.1 shows the apparatus for the electrolysis of molten lithium iodide, using inert electrodes. – power + supply heat Fig. 6.1 Label Fig. 6.1 to show the: • • anode molten lithium iodide.
See it on the paper → - 0971/31 · May/June 2025 · Q6c(ii)[1]
Platinum metal is used as an inert electrode in this electrolysis experiment. Name one other suitable material that can be used as an inert electrode.
See it on the paper → - 0971/31 · May/June 2025 · Q6c(iii)[1]
Name the products formed at the positive and negative electrodes when molten lithium iodide is electrolysed. positive electrode
See it on the paper → - 0971/32 · May/June 2025 · Q5b(i)[2]
Label Fig. 5.1 to show the: • cathode (i)
See it on the paper → - 0971/32 · May/June 2025 · Q5b(ii)[1]
Name a suitable material for the inert electrodes.
See it on the paper → - 0971/32 · May/June 2025 · Q5b(iii)[2]
Name the products formed at the positive and negative electrodes. positive electrode
See it on the paper → - 0971/42 · May/June 2025 · Q1b[1]
typical operating temperature of the Contact process in °C
See it on the paper → - 0971/42 · May/June 2025 · Q3a[3]
Complete the definition of electrolysis by filling in the missing words. The decomposition of compounds when or by the passage of an electric current.
See it on the paper → - 0971/42 · May/June 2025 · Q3b(i)[1]
State whether the mass of the cathode increases, decreases or remains the same when platinum electrodes are used.
See it on the paper → - 0971/42 · May/June 2025 · Q3b(ii)[1]
Describe the change in appearance, if any, of the electrolyte when platinum electrodes are used.
See it on the paper → - 0971/42 · May/June 2025 · Q3b(iii)[1]
Describe what is seen at the anode when platinum electrodes are used.
See it on the paper →
What examiners said
Most candidates were able to identify the electrolyte with some consideration given for spelling or other errors of the chemical name. A small number drew ambiguous arrows for the electrolyte such that it was difficult to determine whether they were identifying the crucible, the electrolyte or an electrode. The most common error was to label the wire to the anode rather than the electrode dipped i...
— Examiner report, May/June 2025, 0971/31 Q6(c)(i) (Cambridge)
Candidates should recall that aqueous metal solutions are often used in electroplating and so would not be considered inert.
— Examiner report, May/June 2025, 0971/31 Q6(c)(ii) (Cambridge)
A small majority of candidates answered this question correctly. Some candidates gave the products the wrong way around.
— Examiner report, May/June 2025, 0971/31 Q6(c)(iii) (Cambridge)
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