Question

What is the significance of vander waal's constants?

Answer 1

vanderwalls constant a is a measure of attractive forces among the molecules of a gas. Greater the value of a , larger the intermolecular attraction. It is independent of temperature and pressure.

Vanderwalls constant b is a measure of the effective size of the gas molecules and it is equal to four times the actual volume of a gas molecule. it is called as co-volume