Assertion: If the collisions between gas molecules were inelastic, an isolated sample of gas could not stay at constant temperature.
Reason: Each inelastic collision would convert some translational kinetic energy into other forms, so the average speed would fall.

Question

Assertion: If the collisions between gas molecules were inelastic, an isolated sample of gas could not stay at constant temperature.

Reason: Each inelastic collision would convert some translational kinetic energy into other forms, so the average speed would fall.

TestHub · Accepted Answer

Kinetic theory assumes elastic collisions so that the total translational energy, and hence temperature, stays constant. Inelastic collisions would drain it, the speeds would fall and the pressure would drop. The reason explains the assertion. A.

Physics - Heat & Thermo Question with Solution | TestHub

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