The Kinetic Molecular Theory of gases predicts pressure to rise as the temperature of a gas increases because :
Correct answer: B. Gas molecules collide more frequently with the container walls
- A. The average kinetic energy of the gas molecules decreases
- B. Gas molecules collide more frequently with the container walls
- C. Gas molecules collide less frequently with the container walls
- D. Gas molecules collide less energetically with the container walls
Explanation
According to the Kinetic Molecular Theory, as temperature increases, the average kinetic energy of gas molecules also increases. This leads to molecules moving faster, which results in them colliding with the container walls more frequently and with greater force. The increased frequency and energy of collisions contribute to a rise in pressure.Option A is incorrect because it states that the average kinetic energy decreases, which contradicts the theory. Option C suggests that collisions become less frequent, which is also wrong as higher temperature means more collisions. Option D claims that collisions are less energetic, which is false since higher temperatures lead to more energetic collisions.
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About Gases
Gas behaviour is explained through the kinetic molecular theory and the relationships among pressure, volume and temperature. Work includes STP, Boyle's and Charles's laws, absolute zero, the ideal gas equation, and the distinction between ideal and real gases, especially the effects of intermolecular forces and molecular volume.
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