Chemistry 9701 · AS & A Level · Reaction kinetics

Reaction kinetics — practice question

The diagram illustrates the Boltzmann distribution of energies for 1 mole of a gas. The gas may participate in a reaction with an activation energy, $E_a$. Which statement best describes the effect of a rise in temperature?

  • APeak P will be higher and fewer molecules will have energy $> E_a$.
  • BPeak P will be higher and more molecules will have energy $> E_a$.
  • CPeak P will be lower and fewer molecules will have energy $> E_a$.
  • DPeak P will be lower and more molecules will have energy $> E_a$.

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