units of a and b in vanderwaals equation Share with your friends Share 0 Shruti Srivastava answered this Dear Amaan Laskar PV=nRT (Ideal Gas Equation)(P+an2V2) (V-nb)=nRT (Van der waals quation)a=attraction constant; P=an2V2; unit of 'a'=PV2n2=atm mol-2 lit2b=constant of volume; V=nb; unit of 'b'=Vn=lit mol-1 Regards 2 View Full Answer