CAIE A Level Chemistry 9701 · Reaction kinetics
In a sample of nitrogen and oxygen gases at room temperature, the molecules collide with each other many millions of times per second, yet the reaction between them is extremely slow. Use the Boltzmann distribution and the idea of effective collisions to suggest why so few of these collisions lead to reaction.
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.
Suggest means: Apply what you know to an unfamiliar situation. There may be more than one acceptable answer. Reason from the principle you have learned to the new context, and say which principle you are using.
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