T-x-y Diagram of Ideal Solution

From the following vapor pressure data, construct the temperature - composition diagram at 1 atm, for the system benzene-toluene, assuming ideal solution behavior.

Mole fraction in liquid phase (x) is given by,

x = (p_t - p_B)/(p_A - p_B)

The corresponding equilibrium mole fraction in vapor phase (y) is,

y = p_Ax/p_t

Using these equations, for the various temperatures given, the following data for x and y are obtained, for the total pressure of 1 atm

From the above-calculated data, the following T-x-y diagram is drawn.