Question

In van der Waal’s equation, b is known as ______________

(a) volume constant

(b) pressure constant

(c) volume correction

(d) pressure correction

The question was asked during an interview.

My question is based upon States of Matter in chapter States of Matter of Chemistry – Class 11

Answer 1

Right option is (c) volume correction

Explanation: In the van der Waal’s equation (P – an^2/V^2)(V – nb) = nRT, b is the volume correction term and is 4 times as the volume of a molecule. The letter a is the pressure correction term in the van der Waal’s equation.