Vapor/liquid-equilibrium azeotropy is impossible for binary systems rigorously described by Raoult's law (Pb. 10.5). For real systems (those with yi ≠ 1). azeotropy is inevitable at temperatures where pisat are equal. Such a temperature is called a Bancroft pains. Not all binary systems exhibit such a point. With Table B.2 of App. B as a resource, identify three binary systems with Bancroft points, and determine the T and P coordinates.
Ground rule: A Bancroft point must lie in the temperature ranges of validity of the Antoine equations.