Question

Real gases deviate from ideal behaviour. 

1. What are the two wrong postulates of kinetic theory of gases, responsible for deviation of real gases from ideal behaviour?. 

2. When do real gases deviate from ideal behaviour?

Answer 1

1. 

• Volume of the molecules of a gas is negligibly small in comparison to the space occupied by the gas. 
• There is no force of attraction between the molecules of a gas. 

2. Real gases deviate from ideal behaviour at high pressure and low temperature, when the gas molecules are very close to each other.