O-LevelChemistryRates of Reaction5070/12 · May/June 2022 · Q11 Mark

A student investigates the rate of reaction between calcium carbonate and hydrochloric acid. The volume of gas in the syringe is recorded after one minute. The experiment is repeated using different concentrations of hydrochloric acid. Which additional pieces of apparatus are essential for the investigation? 1 balance 2 measuring cylinder 3 stop-clock

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A1 and 2 only

B1 and 3 only

C2 and 3 only

D1, 2 and 3

✓ Correct answer

D: 1, 2 and 3

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2022 Paper 1 Variant 2, question 1.

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