3. At 69 °C, 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; Iny₁ = Ax² where A is a constant. (a) The binary system is found to exhibit azetropy at x₁ = y₁ = 0.61. Us this information and modified Raouly's law to estimate the value of A. (b) If this solution at w₁ = 0.25 is flashed at 69 °C to obatin a new liquid solution at x₁ = 0.2, use nV (a) to determine the pressure and the “quality” Y=- of the flash operation. nfeed

Fig: 1