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A level: Kinetic Theory Questions

Q10.

(a)

(i) Write down the equation of state for n moles of an ideal gas.

(ii) The molecular kinetic theory leads to the derivation of the equation pV = 1/3 Nm , where the symbols have their usual meaning.

State three assumptions that are made in this derivation.

(4 marks)

(b) Calculate the average kinetic energy of a gas molecule of an ideal gas at a temperature of 20 °C.

(3 marks)

(c) Two different gases at the same temperature have molecules with different mean square speeds. Explain why this is possible.

(2 marks)

(Total 9 marks)