Consider the phase diagram in Fig. 5.6, which represents a solid–liquid equilibrium. Label all regions of the diagram according to the chemical species that exist in that region and their phases. Indicate the number of species and phases present at the points labelled b, d, e, f, g, and k. Sketch cooling curves for compositions x_B =0.16, 0.23, 0.57, 0.67, and 0.84.

Data in Fig. 5.6,

Temperature, T 0 0.16 e 0.23 0.2 4 0.57 0.67 L 0.4 0.6 Mole fraction of R, x Ok 0.84 0.8 1