Chemistry 9701 · AS & A Level · Reaction kinetics

Reaction kinetics — practice question

In a chemical system, the particles present have a spread of energies. This can be represented on a graph known as the Boltzmann distribution. Which statement correctly describes the effect of a catalyst on the particles in a chemical system?

  • AA catalyst enables particles with a lower energy to collide successfully.
  • BA catalyst increases the number of particles with higher energies.
  • CA catalyst increases the number of particles with the most probable energy value.
  • DA catalyst increases the value of the most probable particle energy.

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI