State the postulates of kinetic theory of gases?

Answer

### Step-by-Step Solution

The Kinetic Theory of Gases (KTG) is based on several key postulates that describe the behavior of gas molecules. Here are the main postulates:

1. **Large Number of Molecules**:
- Gases consist of a large number of molecules. These molecules are identical in size and shape, and they behave as hard spheres. This means that the gas can be treated as a collection of many particles.

2. **Random Motion**:
- The molecules of gas are in constant random motion. There is no preferred direction for the movement of these molecules, and they move in all possible directions.

3. **Straight-Line Motion**:
- The gas molecules travel in straight lines until they collide with either another molecule or the walls of the container. This straight-line motion is a fundamental characteristic of gas behavior.

4. **Small Time Intervals Between Collisions**:
- The time intervals between collisions of gas molecules are very small. This means that the molecules frequently collide with each other as they move randomly.

5. **Elastic Collisions**:
- Collisions between gas molecules, as well as between molecules and the walls of the container, are perfectly elastic. This means that both kinetic energy and momentum are conserved during these collisions.

6. **Negligible Effect of Gravity**:
- The effect of gravity on the gas molecules is negligible. This assumption allows us to ignore gravitational forces when analyzing the behavior of gases under normal conditions.

### Summary of Postulates:
1. Large number of identical molecules.
2. Molecules move in random directions.
3. Molecules travel in straight lines.
4. Small time intervals between collisions.
5. Collisions are perfectly elastic.
6. Negligible effect of gravity.