State the postulates of kinetic theory of gases?

Answer

### Step-by-Step Solution:

The kinetic theory of gases is based on several fundamental postulates that describe the behavior of gas molecules. Here are the key postulates:

1. **Large Number of Molecules**:
- Gases consist of a very large number of molecules that are in constant random motion. The number of molecules is so large that statistical methods can be applied to describe their behavior.

2. **Identical and Elastic Collisions**:
- The molecules of a gas are considered to be identical and behave like small hard spheres. When they collide with each other or with the walls of the container, these collisions are perfectly elastic, meaning that there is no loss of kinetic energy in the collisions.

3. **Negligible Volume of Molecules**:
- The volume of the individual gas molecules is negligible compared to the volume of the container. This means that the actual space occupied by the gas molecules is very small compared to the total volume of the gas.

4. **Random Motion**:
- Gas molecules are in constant random motion, moving in all directions. This motion can be described as a zigzag path, and the molecules travel in straight lines until they collide with another molecule or the walls of the container.

5. **Short Collision Time**:
- The time spent in collisions is very short compared to the time between collisions. This implies that the molecules spend most of their time moving freely rather than colliding.

6. **Negligible Effect of Gravity**:
- The effect of gravity on the motion of gas molecules is negligible. This means that the behavior of gas molecules can be analyzed without considering gravitational forces.

7. **Newton's Laws of Motion**:
- The motion of gas molecules follows Newton's laws of motion, which means that the principles of classical mechanics apply to their behavior.