In Van der Waal’s equation of state for a non-ideal gas, the term that accounts for intermolecular forces is

The Vander Waal’s equation can be written as- 2 2 ( / )( ) P na V V nb nRT The importance of the Vander Waals constant a and b is- The constant ‘a’ gives the measure of intermolecular forces of attraction. The constant b gives the measure of molecular size. Thus, the correct answer is 2 ( ) a P V Compressibility factor