CAIE A Level Chemistry 9701 · Reaction kinetics
A reaction between two gases in a closed flask is slow at room temperature. The temperature of the flask is increased by 20 K, and the rate of reaction increases markedly.
Compare the effect of this temperature increase on the rate of reaction in terms of the Boltzmann distribution and in terms of the frequency of effective collisions.
5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.
Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.
Written by Markquill to follow the Cambridge International syllabus. Markquill is independent and is not affiliated with or endorsed by Cambridge International.