Question

How does the kinetic theory of gases explain heat?

Answer 1

Hint : We know that the kinetic theory of gases is a model that gives us insights about the thermodynamic nature of the gases. We know that the molecules in a gas are free to move hence they suffer; thus, the kinetic energy of the system increases as well as the heat.

Complete Step-By-Step Solution:
We know that the kinetic theory of gases is an approach to define the physical properties of gases like its pressure, temperature or volume. We know that is gases, the molecules are loosely bound thus they move haphazardly. Physical properties of the gas are determined by the motion of the particles as well as their composition.
. The major principles of kinetic theory are:
Gases comprise the large number of particles which are continuously in motion and are spread apart from each other.
There exists no force of attraction between the particles.
Due to the random motion of the particles, they collide with each other, however, there occurs no loss in kinetic energy.
When the molecules move vigorously in the gas, they collide with each other and transfer of energy occurs between the particles in the form of heat. We know that gas, when kept inside a container, exerts pressure on the walls. As the temperature of the gas rises, they encounter random collisions more vigorously and the kinetic energy transferred in the form of heat also increases. Therefore, the pressure exerted on the walls of the container is also increased. Thus, we can say the temperature of the gas is responsible for both the amount of heat transferred as well as the pressure exerted on the walls of the container.

Note:
The major principles of the kinetic theory were, gases comprise of a large number of particles which are continuously in motion and are spread apart from each other, there exists no force of attraction between the particles, Due to the random motion of the particles, they collide with each other, however, there occurs no loss in kinetic energy.