Question

The units of Van der Waals constants ‘b’ and ‘a’ respectively 

(a) mol L^-1 and L atm² mol^-1 

(b) mol L and L atm mol² 

(c) mol^-1 L and L² atm mol^-1 

(d) none of these

Answer 1

(c) mol^-1 L and L² atm mol^-1 

an² / V² atm 

a = atm L² /mol² = L² mol^-2 atm 

nb = L 

b = L /mol = L mol^-1