Solution of a Maxwell Stefan Diffusion Problem

In the bottom of a Stefan tube there is a quiescent liquid with a mixture of acetone (component 1) and methanol (component 2). Vapor that evaporates from this pool of liquid diffuses to the top of the tube. Air (component 3) keeps the mole fractions of components 1 and 2 equal to zero. This problem is solved using Mathcad in Example 1.15 of Principles and Modern Applications of Mass Transfer Operations by Jaime Benitez, Wiley-Interscience, 2002. The present program computes and plots the concentration profiles of components 1, 2 and 3 in the tube using the shooting method.