Which of the following statements is TRUE?
A) At a given temperature, lighter gas particles travel more slowly than heavier gas particles.
B) The smaller a gas particle, the slower it will effuse
C) The higher the temperature, the lower the average kinetic energy of the sample.
D) At low temperatures, intermolecular forces become important and the pressure of a gas will be lower than predicted by the ideal gas law.
E) None of the above statements is true.

Question

Quizplus · Accepted Answer

At low temperatures, intermolecular forces become important and cause the gas particles to stick together more closely, reducing their movements and therefore the pressure they exert. As a result, the measured pressure will be lower than what is predicted by the ideal gas law. Statement A is false as heavier particles tend to travel slower than lighter ones. Statement B is false as smaller particles tend to effuse faster than larger ones. Statement C is false as higher temperatures lead to higher average kinetic energy of the gas particles.

Which of the Following Statements Is TRUE