Question

Explain the drawbacks of KTG as well as difference between behavior of real gases from ideal gases.

Answer 1

1. Kinetic theory of gases does not fully explain the properties of liquid. In liquids molecules are close to each other and retain constant random motion. The rise in temperature increases the molecular motion and the volume of liquids increase with increasing temperature, but not like gases.
2. Kinetic theory of gases does not explain the properties of solid as solids wont diffuse.

Real gases show deviation from ideal gas at high pressure and low temperature.
The reason is at high pressure the molecules are very close to each other as the total volume is less. Due to this the particles experience attractive or repulsive forces which is against to the postulate of kinetic theory of gases'

At low temperature the volume is low. At this low volume, the volume of the gas particles cannot be neglected to the total volume of the gas. But the kinetic theory of gases is saying the volume occupied by the gas particles is less compared to the total volume.