Estimate the molar volume of saturated$-$vapor $n-$hexane, using Redlick Kwong EOS.

Given that the vapor pressure of $n-$hexane at $320K$ is $9\mathrm{.}2573$ bar.

Table $3\mathrm{.}1$: Parameter Assignments for Equations of State

For use with Fys $(3\mathrm{.}46)$ through $(3\mathrm{.}53)$

arsk$(T_r$;$)=[1+(0\mathrm{.}480+1\mathrm{.}574-0\mathrm{.}176{}^2)(1-T_1^{\frac{1}{2}}){]}^2$

$($vikith $=[1+037464+1\mathrm{.}54226-0\mathrm{.}26992{}^2)(1-T_r^{\frac{1}{2}})$