WAEC Chemistry 2018 Objective — Question 26
Question 26 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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Which of the following statements best explains the differences between a gas and a vapour?
- A. unlike gases, vapours are liquids at room temperature
- B. unlike gases, vapour can easily be condensed into liquidsCorrect
- C. unlike gases, vapor is readily converted into solids
- D. vapours are generally denser than gases
Explanation
A vapour, unlike a true gas, can be liquefied by pressure alone at room temperature, since it exists below its critical temperature.
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