Question

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

• A. volume occupied by the molecules.
• B. intermolecular attraction.
• C. intermolecular repulsion.
• D. intermolecular collisions per unit volume.

Answer 1

The correct option is A volume occupied by the molecules.

In van der Waals equation of state, the constants $a$ and $b$ represent the magnitude of intermolecular attraction and excluded volume respectively and are specific to a particular gas. The constant b is a measure of the volume occupied by the molecules.