Question

What are the principles of kinetic molecular theory?

Answer 1

The kinetic molecular theory of gases discusses the behavior of gases through experimental observations. The kinetic molecular theory of gases gives a better explanation of the ideal gas law.

Complete answer:
Kinetic molecular theory of gases gives several assumptions or postulates. But we will have a look at the four important principles of kinetic molecular theory. The principles are as follows:
The molecules of gas should be in a state of constant random motion as they are more in number and behave like circular objects.
The distance between two gas particles should be more than the size of the particle itself. Thus the volume of gas consists of more empty spaces.
The collision occurring between the gas particles and the container should be perfectly elastic. No energy loss takes place when the particles collide with each other or with the walls of the container.
The temperature of the gas determines the average kinetic energy of the gas particles. Thus the kinetic energy is directly proportional to the temperature in kelvin.

Additional Information:
The kinetic molecular theory also states that the gas particles follow a straight line until they come in contact and collide with another particle or the container wall. The gas particles show no attraction force with other gas particles or the walls of the container.

Note:
To study the application of the kinetic theory of gases observes the Brownian motion of the dust particles in the air. The theory shows the relation between, Boyle’s law, Gay-Lussac’s law, and Charles's Law.