Problem 1(b) - Molar Volume and Compress... Van Der Waals f(V)=(P+a/(V^2))*(V-b)-R*T R=0.08206 T=450 Tc=405.5 Pc=111.3 Pr=1 P=Pr*Pc a=27*(R^2*Tc^2/Pc)/64 b=R*Tc/(8*Pc) Z=P*V/(R*T) V(min)=0.01, V(max)=0.5