0653.C8.3.03 — Describe and explain the displacement reactions of halogens with other halide ions: past paper questions
Real questions on 0653.c8.3.03 — describe and explain the displacement reactions of halogens with other halide ions
The newest 5 of 5 written questions. Open one to see it on the real paper.
- 0653/41 · May/June 2025 · Q5b(i)[1]
State the type of chemical reaction when chlorine reacts with aqueous potassium bromide.
See it on the paper → - 0653/41 · May/June 2025 · Q5b(ii)[1]
Write the word equation for the reaction of chlorine with aqueous potassium bromide.
See it on the paper → - 0653/41 · May/June 2025 · Q5b(iii)[1]
Explain why chlorine does not react with aqueous potassium fluoride.
See it on the paper → - 0653/42 · February/March 2024 · Q5b[2]
Aqueous chlorine reacts with aqueous potassium bromide. State the word equation for this reaction.
See it on the paper → - 0653/42 · February/March 2024 · Q5c[1]
Halogen molecules are diatomic. State the meaning of diatomic.
See it on the paper →
What examiners said
Some candidates were familiar with the term displacement. Popular incorrect suggestions included replacement and endothermic and exothermic.
— Examiner report, May/June 2025, 0653/41 Q5(b)(i) (Cambridge)
Candidates were asked to write a word equation which many did correctly. Candidates who wrote the balanced symbol equation were not awarded credit. The most common mistake was writing bromide instead of bromine.
— Examiner report, May/June 2025, 0653/41 Q5(b)(ii) (Cambridge)
It was usually recognised that this question concerned the relative reactivities of chlorine and fluorine. Mistakes included using the terms chloride and fluoride and suggestions that the reactivity of potassium was involved.
— Examiner report, May/June 2025, 0653/41 Q5(b)(iii) (Cambridge)
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