Question

At what temperature is the rms velocity of a hydrogen molecule equal to that of an oxygen molecule at 47°C.

Assertion: The total translational kinetic energy of all the molecules of one mole of an ideal gas is 1.5 times the product of its pressure and its volume. Reason: The molecules of a gas collide with each other and the velocities of the molecules change due to collision.

Assertion: Air pressure in a car tyre increases during driving. Reason: Absolute zero temperature is not zero energy temperature.

Explain the process of evaporation and analyze how it leads to cooling, using the concept of kinetic energy of molecules.