At 69 oC, the saturation pressures of benzene(1) and 2-propanol(2) are 530 mmHg and 434 mmHg, respectively. When mixed together, they form a nonideal solution that could be reasonablly be decsribed by 2 2 1 2 2 1ln ; lnAx Ax where A is a constant. (a) The binary system form an azeotrope at this temperature whose composition is 1 0.61x . Us this information to estimate the value of A. (b) If a liquid solution containing 25 mol% benzene and the rest 2-propanol is to be flashed at 69 oC to obatin a new solution at 1 0.2x , use your model from (a) to determine the pressure and the quality Y of the flash operation. (c) If you accidentally assume ideal soluiton for the flash operation in (b), calculate the resultant % error in the determination of pressure?

= = At 69C, the saturation pressures of benzene(1) and 2-propanol(2) are 530 mmHg and 434 mmHg, respectively. When mixed together, they form a nonideal solution that could be reasonablly be decsribed by In Y1 = Ax} ; In y2 = Ax? where A is a constant. (a) The binary system form an azeotrope at this temperature whose composition is xz = 0.61. Us this information to estimate the value of A. (b) If a liquid solution containing 25 mol% benzene and the rest 2-propanol is to be flashed at 69 C to obatin a new solution at x = 0.2, use your model from (a) to determine the pressure and the "quality" Y of the flash operation. C) If you accidentally assume ideal soluiton for the flash operation in (b), calculate the resultant % error in the determination of pressure