Question

Which one of the following statement is not consistent with the kinetic-molecular theory of gases?

• A. Individual gas molecules are relatively far apart
• B. The actual volume of the gas molecules themselves is very small compared to the volume occupied by the gas at ordinary temperature and pressure
• C. The average kinetic energies of different gases are different at the same temperature
• D. The theory explains most of the observed behavior of gases at ordinary temperatures and pressures

Answer 1

Answer: (C)

The average kinetic energies of different gases are different at the same temperature

Option (C) is correct.

According to kinetic theory of gases,the kinetic energy of a gas is a measure of its temperature.Individual gas molecules have different speeds,but the temperature and kinetic energy of the gas refer to the average of these speeds.

All gases at a given temperature have the same average kinetic energy.