Chemistry 9701 · AS & A Level · Reaction kinetics

Reaction kinetics — practice question

The diagrams show two Boltzmann distributions. For diagram 1, one of the curves P or Q represents a temperature that is greater than the temperature of the other curve. For diagram 2, one of the lines X or Y represents the activation energy for a catalysed reaction, and the other line represents the activation energy for the same reaction when uncatalysed. 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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