Question

An ideal gas cannot be liquefied because?

• A. Collision are elastic
• B. Of the absence of attractive forces.
• C. Gravity has no effect on the molecule.
• D. The average K.E is not proportional to the absolute temperature

Answer 1

The correct option is A Collision are elastic

Gases liquefy when their component molecules come into contact and interact with each other, this will always happen before absolute zero because real gas particles have volume. But an ideal gas has particles of zero volume, and no intermolecular interactions, by defination. Therefore it can not liquefy.