Question

Which statement is a postulate of the kinetic molecular theory of gases? The pressure exerted by the gas is due to the gas particles colliding with the container walls. The pressure exerted by the gas is due to repulsions between the gas particles. The pressure exerted by the gas is due to the gas particles sticking to the container walls.

Answer 1

The pressure exerted by the gas is due to the gas particles colliding with the container walls.

Step-by-step explanation:

Kinetic molecular theory postulates:-

• The gas is composed of small molecules are they are in continous random motion and having elastic collisions with one another and also with the walls of the container.
• The molecules of the gas does not exert any kind of repulsive or attractive forces on each other and they their size is negligible as compared to the difference between them.
• Pressure exerted by the molecules of the gas results from the collisions which is happening between the molecules of the gas and the walls of the container.
• Average kinetic energy of molecules of the gas is directly proportional to absolute temperature.

Hence, The correct option is:- The pressure exerted by the gas is due to the gas particles colliding with the container walls.