Which of the following statements is TRUE? a) Particles of different masses have the same average speed at a given temperature. b) The larger a molecule, the faster it will effuse. c) At very high pressures, a gas will occupy a larger volume than predicted by the ideal gas law. d) For a given gas, the lower the temperature, the faster it will effuse. e) None of the above statements are true

None of the above statements is True

Explanation:

According to Graham's law, the effusion rate and the square root of the molecular mass of a gas are inversely proportional. Therefore, heavy gas particles diffuse slower compared to light particles which effuse at a faster rate. Particles of different masses have varying average speeds at a given temperature. Large molecules effuse at a slower rate compared to smaller molecules. The diffusion rate of a gas increases with an increase in temperature because higher temperature increases the kinetic energy of particles of the gas making them move faster.