Sketch a T$-$xy diagram for an ideal, binary

mixture.

a$)$ Illustrate a partial vaporization for a feed of $25$ mol$\%$ of the

more volatile component. Indicate the two phases in equilibrium,

the bubble point, and the dew point.

b$)$ Illustrate a partial condensation for a feed of $50$ mol$\%$ of the

more volatile component. Indicate the two phases in equilibrium,

the bubble point, and the dew point.