The excess Gibbs energy of a binary liquid mixture at T and P is given by GERT = (-2.6x 1.8x2)x]x2 (a) Find expressions for In yi and In y2 at T and P. (b) Show that when these expressions are combined in accord with Eq. (11.99) the given equation for GF/RT is recovered. (c) Show that these expressions satisfy Eq. (11.100), the Gibbs/Duhem equation. (d) Show that (d In Y/dx1)x1=1 = (d in y2/dx1)x1=0 0. (e) Plot GE /RT, in y, and In y2 as calculated by the given equation for GE / RT and by the equations developed in (a) vs. X1. Label points in you and In y, and show their values.