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A-LevelChemistryStates of matter9701/12 · Oct/Nov 2023 · Q141 Mark

A mixture of the three gases, oxygen, nitrogen and argon, is at a total pressure of 500 kPa. There is a total of 1.2 moles of gas in the mixture. If the oxygen gas alone occupied the entire volume of the mixture, it would exert a pressure of 150 kPa. At room conditions the amount of nitrogen gas in the mixture would occupy a volume of 5.76 dm³. What is the partial pressure of the argon gas in the mixture?

A150 kPa
B200 kPa
C250 kPa
D300 kPa

✓ Correct answer

C: 250 kPa

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About this question

Topic
States of matter, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, Oct/Nov 2023 Paper 1 Variant 2, question 14.

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