Chemistry 9701 · AS & A Level · Reaction kinetics

Reaction kinetics — practice question

For the reaction shown, the concentrations of both X and Y are each lowered to one half of their starting values while the total volume of the solution remains unchanged. $\text{X(aq)} + \text{Y(aq)} \rightarrow \text{XY(aq)}$ At the same time, the temperature is raised from $298\,\text{K}$ to $348\,\text{K}$. Which prediction is certainly correct?

  • AA smaller proportion of collisions between particles of X and particles of Y will be successful.
  • BThe average kinetic energy of particles of X and particles of Y will increase.
  • CThe rate of the reaction will be unaffected.
  • DThe frequency of collisions between particles of X and particles of Y will halve.

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