Do all four parts of Prob. 13.7, and compare the results. The required temperatures and pressures vary significantly. Discuss possible processing implications of the various temperature and pressure levels.

Problem 13.7

A single-stage liquid/vapor separation for the benzene(1)/ethylbenzene(2) system must produce phases of the following equilibrium compositions. For one of these sets, determine T and P in the separator. What additional information is needed to compute the relative amounts of liquid and vapor leaving the separator? Assume that Raoult’s law applies.
(a) x₁ = 0.35, y₁ = 0.70.
(b) x₁ = 0.35, y₁ = 0.725.
(c) x₁ = 0.35, y₁ = 0.75.
(d) x₁ = 0.35, y₁ = 0.775.