Mean free path of molecules in a rigid container will be:
Correct answer: C. Unchanged on changing temperature
- A. Increases on increasing temperature
- B. Decreases on increasing temperature
- C. Unchanged on changing temperature
- D. Increases somewhere and decreases
Explanation
Mean free path is the average distance a molecule travels between collisions. In a rigid container, the volume and number of molecules are fixed, so the particle density (N/V) is constant. Since mean free path depends on particle density, it remains unchanged with temperature.
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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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