Chemistry 9701 · AS & A Level · Reaction kinetics

Reaction kinetics — practice question

Boltzmann distributions are displayed in the diagrams. For diagram 1, either curve P or Q represents the higher temperature than the other curve. For diagram 2, either line X or Y represents the activation energy when a catalyst is present, while the other line shows the activation energy for the same reaction when no catalyst is present. Which combination gives the correct curve and line?

  • Ahigher temperature: P; presence of catalyst: X
  • Bhigher temperature: P; presence of catalyst: Y
  • Chigher temperature: Q; presence of catalyst: X
  • Dhigher temperature: Q; presence of catalyst: Y

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