A level: Kinetic Theory Questions

Q4.

(a) The molecular theory model of an ideal gas leads to the derivation of the equation

pV = ¹/₃ Nm

Explain what each symbol in the equation represents.

(4 marks)

(b) One assumption used in the derivation of the equation stated in part (a) is that molecules are in state of random motion.

(i) Explain what is meant by random motion.

(ii) State two more assumptions used in this derivation.

(3 marks)

(c) Describe how the motion of gas molecules can be used to explain the pressure exerted by a gas on the walls of its container.

(4 marks)

(Total 11 marks)