Question

Which of the following demonstrates non-ideal behaviour of a gas?

• A. Some of the molecules move more rapidly than others
• B. Condensation occurs at low temperatures
• C. The gas exerts a force on the walls of its container
• D. The average speed of the molecules in the gas is directly proportional to the square root of the absolute temperature.

Hint:

Ideal gases do not undergo condensation. Real gases do, showing deviation from ideality.

Answer 1

The Correct Option is B

Non-ideal gas behaviour includes intermolecular attraction. At low temperatures, gas molecules can condense, which deviates from ideal gas assumptions.