Question

The pressure of real gases is less than that of ideal gas because of

• A. Intermolecular attraction
• B. Finite size of particles
• C. Increase in the number of collisions
• D. Increase in the kinetic energy of the molecules

Answer 1

The correct option is A Intermolecular attraction

The pressure is greater in an ideal gas as compared to the pressure of a real gas since the particles do not have attractive forces that enable the molecules to hold back when they collide with the walls of the container. Hence, particles collide with less energy i.e. a lower pressure.