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Question 4 Marks 30 Binary system 1-Chlorobutane (1) and Chlorobenzene (2) conform closely to Raoult's Law. The vapor pressure for the pure species are given by Antoine equation: B; In pisat (kPa)= A; T(°C)+C; Antoine coefficients for 1-Chlorobutane (1) and Chlorobenzene (2) are given in Table Q4. T(+ Table Q4: Antoine Coefficients Ai B; C Component 1-Chlorobutane (1) Chlorobenzene (2) 13.7965 2723.73 218.265 13.8635 3174.78 211.700 (i) Prepare a graph showing P vs X1 and P vs y1, for a temperature of 90 °C. [12 marks] (ii) Calculate the bubble-P and dew-P for the solution of overall composition zi = 0.5 at T=90 °C. [6 marks] (iii) Figure Q4 shows the flash vessel to separate the binary Chlorobutane/Chlorobenzene. For a feed basis of 1 mole/s, determine the equilibrium mole fractions (Xi, yi) of the liquid and the vapor phases formed and the molar flows (V, and L) of the vapor and liquid formed. [12 marks]
Vapor Phase V(mole/s) {yi} F L A Feed Mixture F= 1 mole/s {zi} S H Figure Q4: Flash Separator Liquid Phase L (mole/s) {x;}