O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2023 · Q171 Mark

A student plans to investigate how the rate of the reaction changes when hydrochloric acid and calcium carbonate react. CaCO3(s) + 2HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g) Three methods are described. Which methods could be used to measure how the rate of reaction changes?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

A1, 2 and 3

B1 and 2 only

C1 and 3 only

D2 and 3 only

✓ Correct answer

C: 1 and 3 only

Oracle Prep sorts past-paper questions by topic, so you can drill Rates of Reaction and see which topics are most likely to come up next.

Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2023 Paper 1 Variant 1, question 17.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content