Question

Ideal gas cannot be liquified because :

• A. ideal gas has highest intermolecular force of attraction
• B. intermolecular forces in ideal gas are negligible
• C. ideal gas has high density
• D. none of the above

Answer 1

The correct option is B intermolecular forces in ideal gas are negligible

Ideal gas cannot be liquefied because the intermolecular forces in ideal gas are negligible. In case of negligible intermolecular forces, the molecules will have free random motion. This is possible in gaseous state. In liquid state, there is restricted motion of molecules. The molecules are held by intermoelcular forces in liquid state. This restricts their freedom of motion.