CAIE A Level Chemistry 9701 · States of matter
A sealed rigid container holds nitrogen gas.
(a) Suggest, in terms of collisions, why the gas exerts a pressure on the inner surface of the container.
(b) At very high pressure, nitrogen does not behave as an ideal gas. Suggest two reasons for this.
4 marks, so the mark scheme is looking for about 4 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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