Problem 2 (10 pts): The use of Peng Robinson EOS leads to the following expression of fugacity coefficient of vapor and liquid (Sandler): fv A In A = (ZV 1) In(ZV B) (ZV + (1 + V2)B In 2V2B ZV + (1 - 72)B) P and f A (24 + (1 + V2)B) = B (24 1) In(Z? B) - In 2V2B 124 + (1 - V2)B) where A = aP/(RT)2 and B = Pb/RT In' P = Using these equations, calculate fugacity of liquid benzene at 100 C and 50 bar; and fugacity of vapor at 100 C and 10 bar. (Look at Section 3.6 on how to use cubic equations) Problem 2 (10 pts): The use of Peng Robinson EOS leads to the following expression of fugacity coefficient of vapor and liquid (Sandler): fv A In A = (ZV 1) In(ZV B) (ZV + (1 + V2)B In 2V2B ZV + (1 - 72)B) P and f A (24 + (1 + V2)B) = B (24 1) In(Z? B) - In 2V2B 124 + (1 - V2)B) where A = aP/(RT)2 and B = Pb/RT In' P = Using these equations, calculate fugacity of liquid benzene at 100 C and 50 bar; and fugacity of vapor at 100 C and 10 bar. (Look at Section 3.6 on how to use cubic equations)