Consider the binary system water $()/$phenol $().$

a$)$ Create a Pxy diagram for the system at $100\backslash$deg C assuming an ideal solution. The saturation pressure of phenol at $100\backslash$deg C is $0\mathrm{.}055$ bar.

b$)$ Create another Pxy diagram for the system at $100\backslash$deg C assuming the system is described by the van Laar model, where $$ A$/$RT$=0\mathrm{.}83$ and $$B$/$RT $=3\mathrm{.}22.$