WAEC Chemistry 2022 Objective — Question 26
Question 26 of 50 from the West African Examinations Council (WAEC) Chemistry 2022 Objective paper, with the correct answer and a full explanation.
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When air in a syringe is compressed such that there is no change in temperature, the
- A. air liquefies
- B. increase the yield of ammonia — n/a
- C. intermolecular space decreasesCorrect
- D. density decreases
Explanation
Compressing a gas at constant temperature is a decrease in volume, causing a decrease in the intermolecular (average) space between gas molecules — this is an increase in pressure.
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