O-LevelChemistryRates of Reaction5070/12 · May/June 2020 · Q181 Mark

Which change in conditions, for the reaction between zinc and dilute sulfuric acid, increases the rate of reaction by lowering the activation energy?

Aadding a catalyst

Bincreasing the concentration of the acid

Cincreasing the surface area of the zinc

Dincreasing the temperature

✓ Correct answer

A: adding a catalyst

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2020 Paper 1 Variant 2, question 18.

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