Which of the following is an assumption of the kinetic model of an ideal gas?
Correct answer: B. The collisions between particles are elastic
- A. The gas is at high pressure
- B. The collisions between particles are elastic
- C. There are weak forces of attraction between the particles in the gas
- D. The total energy of particles is proportional to the temperature
Explanation
OPTION A: The gas behave ideally at low pressure and at high temperature.OPTION B: According to KMT, all the collisions of a gas molecule are elastic, because the total energy of the molecule remains constant. Hence, B is the correct option.OPTION C: According to KMT, the attractive or repulsive forces among the gas molecules are negligible. Therefore, every gas molecule behaves independently.OPTION D: According to KMT, the average kinetic energy of gas molecules is directly proportional to absolute temperature.
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About Kinetic Molecular Theory
Kinetic molecular theory explains gases as rapidly moving particles separated by large distances, with negligible volume and negligible intermolecular attraction in the ideal model. It relates temperature to average kinetic energy and explains gas pressure, Boyle's and Charles's laws, diffusion, effusion and the conditions under which real gases deviate from ideal behavior.
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