Physical Chemistry #12: The Gaseous State, Ideal Gas Law and General Gas Equation (Slides & Tasks)

In this lesson we discuss the particle model of states of matter, kinetic theory, the ideal gas law and the general gas equation. This is lesson twelve in our physical chemistry series for Unit 4: States of Matter (from the Cambridge International AS Chemistry Curriculum (9701) 2019-2021 curriculum).

LESSON OBJECTIVE: Understand how to calculate and manipulate the ideal gas law equation and explain its limitations.

Learning Outcomes (from the Cambridge AS Chemistry Curriculum 2019-2021):
4.1 The gaseous state: ideal and real gases and pV=nRT
a) state the basic assumptions of the kinetic theory as applied to an ideal gas

b) explain qualitatively in terms of intermolecular forces and molecular size:
i) the conditions necessary for a gas to approach ideal behaviour
ii) the limitations of ideality at very high pressures and very low temperatures

c) state and use the general gas equation pV = nRT in calculations, including the determination of Mr