1. A binary mixture is in vapor liquid equilibrium when the mole fraction of

component 1 in the liquid, x₁ = 0.6 at 144°C. The mixture can be modeled by the

one-parameter Margules equation. At this temperature, the saturation pressures

of 1 and 2 are P,sat = 79.80 kPa and P₂sat = 31.66 kPa, respectively. The system

forms an azeotrope at 144°C at x₁ = 0.294. (a) What is the equilibrium pressure

in kPa at 144°C when x₁=0.6? (b) What is the mole fraction of component 1 and

2 in vapor (y₁ and y2), at 144°C when x₁=0.60? (c) Draw the P-xy diagram with

both Pat and the azeotrope labelled.