Question

In Van der Waals equation of state of the gas law, the constant b is a measure of__.

• A. Intermolecular repulsions
• B. Intermolecular collisions per unit volume
• C. Volume occupied by the molecules
• D. Intermolecular attractions

Answer 1

The correct option is C

Volume occupied by the molecules

Van der Waals equation for 1 mol is $⟮\frac{P+a{n}^2}{V^2}⟯$(V-nb) = nRT

Since the excluded volume is significant the correction factor b is introduced.