A level: Kinetic Theory QuestionsQ4. (a) The molecular theory model of an ideal gas leads to the derivation of the equation
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.
(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. Molecules are in constant random motion. When the molecules collide (with the walls) the walls exert a force on the molecules causing a change in their momentum. The molecules exert an (equal and opposite) force (on the walls)creating pressure (as pressiure = force/area) (4 marks) (Total 11 marks) |
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