Question

A gas deviates from ideal behavior at a high pressure because its molecules:

• A. attract one another
• B. Show the tyndal effect
• C. have kinetic energy
• D. are bounded by covelent bond

Answer 1

The correct option is A attract one another

The basic concept of the kinetic-molecular theory give us the information why real gases deviate from ideal behavior. The molecules of an ideal gas are assumed to occupy no space and have no attractions for one another.

Real molecules, however, do have finite volumes, and they do attract one another. So, a gas deviates from ideal behavior at a high pressure because its molecules attract one another.

Hence, option A is correct.