O-LevelChemistryRates of Reaction5070/12 · Oct/Nov 2021 · Q211 Mark

Which statement is correct for all reversible reactions that have reached dynamic equilibrium?

AIntroduction of a catalyst changes the position of the equilibrium.

BThe number of moles of products equals the number of moles of reactants.

CThe rate of the forward reaction equals the rate of the reverse reaction.

DWhen the reaction reaches the position of equilibrium the reaction stops.

✓ Correct answer

C: The rate of the forward reaction equals the rate of the reverse reaction.

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2021 Paper 1 Variant 2, question 21.

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