Question

In van der Waals equation of state of gas laws, the constant $b$ is a measure of

• A. Intermolecular collisions per unit volume
• B. Intermolecular attraction
• C. Volume of the molecules
• D. Pressure exerted by the gas molecules on the surface

Answer 1

The correct option is C Volume of the molecules

In van der Waals equation of state of the gas law, the constant $b$ is a measure of the volume of the gas molecules. It gives the effective size of the gas molecules. The greater value of $b$ indicates a larger size of the molecules and smaller compressible volume.