Which of the following would increase the volume of a gas?

a: decreasing the pressure applied to the gas

b: decreasing the temperature of the gas?

c: decreasing the number of gas molecules

d: decreasing the size of the gas molecules

The content that follows is the substance of lecture 18. In this lecture we cover the Gas Laws: Charles', Boyle's, Avagadro's and Gay Lussacs as well as the Ideal and Combined Gas Laws.

Laws of Gas Properties

There are 4 general laws that relate the 4 basic characteristic properties of gases to each other. Each law is titled by its discoverer. While it is important to understand the relationships covered by each law, knowing the originator is not as important and will be rendered redundant once the combined gas law is introduced. So concentrate on understanding the relationships rather than memorizing the names.

Charles' Law - gives the relationship between volume and temperature if pressure and amount of gas are held constant.

1) If the volume of a container is increased, the temperature increases.

2) If the volume of a container is decreased, the temperature decreases.

This means that the volume of a gas is directly proportional to its temperature.