1.0 Assumptions of Kinetic Theory of Gases

  Kinetic Theory of Gases

• A gas is made up of large number of small, identical, neutral, spherical and elastic particles which are called molecules.

• There is no Force of attraction between gas molecules.

• The actual space occupied by gas molecules are negligible in comparison to the volume of the container in which it is kept.

• The gas molecules are moving in random directions with different speed in accordance with Maxwell Speed Distribution Law.

• During the random motion of gas molecules, they collide with each other and with the walls of the container in which they are kept. The pressure developed by gas molecules is due to continuous collisions of gas molecules with the wall of container.

• All collisions are perfectly elastic in nature.

• The time for which gas molecules are in contact with the wall is negligible as compared to the time interval between two successive collisions on the wall of the container.

• Gas molecules obey Newton's Laws of Motion.

• Effect of gravity is negligible i.e., gas molecules travel in a straight line.