For one of the binary systems listed in Table $13\mathrm{.}10,$ based upon on Eq$.(13\mathrm{.}9)$ and the Wilson equation, prepare a Pxy diagram for $T=60C.$ Do the ethanol$(1)/$toluene$(2)$ system.

$V_1=58\mathrm{.}68c\frac{m^3}{m}ol$;$V_2=106\mathrm{.}8c\frac{m^3}{m}ol$;$a_{12}=1556\mathrm{.}45ca\frac{l}{m}ol$;$a_{21}=210\mathrm{.}52ca\frac{l}{m}ol$