O-LevelChemistryRates of Reaction5070/11 · May/June 2023 · Q141 Mark
Catalysts change the rate of chemical reactions. Which statements correctly describe the effect of adding a catalyst to a reaction? 1 All reactant particles have more energy and move faster. 2 The activation energy is lowered. 3 More reactant particles collide with enough energy to react.
A1, 2 and 3
B1 and 3 only
C2 and 3 only
D3 only
✓ Correct answer
C: 2 and 3 only
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