Question

According to kinetic theory of gases, for a diatomic molecule

• A. The pressure exerted by the gas is proportional to the mean velocity of the molecules
• B. The pressure exerted by the gas is proportional to the root mean square velocity of the molecules
• C. The root mean square velocity is inversely proportional to the temperature
• D. The mean translational kinetic energy of the molecules is proportional to the absolute temperature

Answer 1

The correct option is D

The mean translational kinetic energy of the molecules is proportional to the absolute temperature

All molecules of an ideal gas show random motion. They collide with each other and the walls of the container during which they lose or gain energy. So they may not have the same kinetic energy always.