Question
Chemistry Question on States of matter
An ideal gas cannot be liquefied because
A
its critical temperature is always above 0∘C
B
its molecules are relatively smaller in size
C
it solidifies before becoming a liquid
D
forces operating between its molecules are negligible
Answer
forces operating between its molecules are negligible
Explanation
Solution
Gases can be liquefied by lowering the temperature and increasing the pressure. An ideal gas have no intermolecular force of attraction, so it cannot be liquefied by applying high pressure and decreasing temperature.