An increase in temperature causes an increase in the pressure of a gas because there is an increase in the?
With reference to the Kinetic Molecular Theory of gases, the temperature of a gas is a direct measure of the average kinetic energy of its molecules. When temperature increases, the molecules gain more energy and their average velocity (speed) increases.
This increase in velocity leads to a rise in pressure through forceful collisions, as the faster-moving molecules strike the walls of the container with greater momentum, thereby, exerting a larger force per impact. Also, due to frequent collisions because they are moving faster, hence, molecules travel the distance between the walls in less time, leading to more frequent collisions with those walls.
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