P6.11 Assume that a sealed vessel at constant pressure of 1 bar initially contains 2.00 mol of NOz(g). The sys- tem is allowed to equilibrate with respect to the reaction 2 NO, (g) NO4(g). The number of moles of NOz(g) and N204(g ) at equilibrium is 2.00 - 28 and 5, respectively. where & is the extent of reaction. a. Derive an expression for the entropy of mixing as a func- tion of &. b. Graphically determine the value of & for which Ani S has its maximum value. c. Write an expression for Goare as a function of 5. Use Equation (6.104) to obtain values of G, for NO, and N204. d. Plot Gmixture = Gpure + AmixG as a function of & for 7 = 298 K and graphically determine the value of & for which Gmixture has its minimum value. Is this value the same as for part (b)