Abinary liquid mixture of component a and component b at a constant temperature and pressure has excess gibbs free energy described by the following equation: ge -(1.8x2 +2.6x,)x, x2 rt for the described system, determine the following information: a) give the expressions of yi and y2 in terms of xi and x2, assuming vi rt b) prove that equations derived in part (a) satisfy gibbs-duhem c) ploty, y, and label the equilibrium mixing point for the system rt