Butanol and Chlorobenzene form a minimum-boiling azeotropic system. The mole fraction of 1-Butanol in the liquid (x) and vapour (y) phases at 1.000 atm is given below for a variety of boiling temperatures.
T (K) x y
396.57 0.1065 0.2859
393.94 0.17 0.3691
391.6 0 0.2646 0.4505
390.15 0.3687 0.5138
389.03 0.5017 0.584
388.66 0.6091 0.6409
388.57 0.7171 0.7070
Pure chlorobenzene boils at 404.86 K. (a) Construct the chrolobenzene-rich portion of the phase diagram from the data. (b) Estimate the temperate at which a solution whose mole fraction of 1-butanol is 0.300 begins to boil. (c) State the compositions of the two phases present after a solution initially 0.300 1-butanol is heated to 393.94k.