This figure shows the $P-xy$ diagram for Vapor$/$ liquid equilibrium of ethanol$/$ ethyl acetate at $70C.$

a$)$ The pressure above both mixture is measure to be at $86$kPa. What are possible composition of the liquid and vapor phases?

b$)$ Consider a mixture with $x_1=0\mathrm{.}80$ initially at $70C$ and $100$kPa. Describe the evolution phases and phase composition as the pressure decreased to $70$kPa.

c$)$ What is the composition of the azeotrope for this mixture?

d$)$ Would this be called as high$-$boiling or lowboiling azeotrope?