Answer to Question #58213 in Physical Chemistry for GLORY

Question

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

- Individual gas molecules are relatively far apart.
- The actual volume of the gas molecules themselves is very small compared to the volume occupied by the gas at ordinary temperatures and pressures.
- The average kinetic energies of different gases are different at the same temperature.
- There is no net gain or loss of the total kinetic (translational) energy in collisions between gas molecules.

Answer 1

Answer:
The following statement “The average kinetic energies of different gases are different at the same temperature.” is not consistent with the kinetic-molecular theory of gases. The right statement should be “The average kinetic energy is the same for all gases at a given temperature, regardless of the identity of the gas.”