JAMB Chemistry 2019 Objective — Question 22

Question 22 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2019 Objective paper, with the correct answer and a full explanation.

An increase in temperature causes an increase in the pressure of a gas in a fixed volume due to an increase in the

A. number of molecules of the gas
B. density of the gas molecules
C. number of collisions between the gas molecules and the walls of the containerCorrect
D. volume of the gas molecules

Explanation

The increase in gas pressure with temperature (at constant volume) results from the increased number of collisions between gas molecules, and between the gas molecules and the container walls, as molecules move faster.

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