Question

A real gas is expected to exhibit maximum deviations from ideal gas law at:

• A. low T and high P
• B. low T and low P
• C. high T and high P
• D. high T and low P

Answer 1

Answer: (A)

low T and high P

At low temperature and high pressure, the molecular motion tends to become low. The intermolecular forces of attraction become significant and the molecules come near each other. So, there is a deviation from ideal behaviour because, in an ideal gas, we assume that the molecular interaction terms become negligible.

Hence, the correct answer is option $\text{A}$.