A gas deviated from ideal behaviour at a high pressure because its molecules

Options

A. Have kinetic energy
B. Are bound by covalent bonds
C. Attract one another
D. Show the Tyndall effect

Answer

C

Explanation

Some attractive forces exist between the molecules of real gases. When a molecule approaches the wall of the container it experiences an inward pull as a result of attractive forces exerted by the neighbouring molecules inside the vessel. Therefore the observed pressure is less than the ideal pressure and hence gas deviates from ideal behaviour at high pressure.