Im stuck at number (b) iii. iv. A binary system consists of benzene/ethylebenzen
ID: 947447 • Letter: I
Question
Im stuck at number (b) iii. iv.
A binary system consists of benzene/ethylebenzene The vapor pressure for the pure species are given by the following Antoine Equations: ln P_1^sat (kPa) = 13-7819 - 2726.81/T(K) - 55 578 ln P_2^sat (kPa) = 13.9726 - 3259.93/T(K) - 60 850 State any important assumption(s) that you made by using Antoine Equation. Prepare a graph showing pressure (P) vs. liquid mole fraction (x_1) and P vs. vapor mole fraction (y_1) for a temperature of 90 degree C. Prepare a graph showing temperature (T) vs. x_1 and T vs. y_1 for a pressure at 90 kPa. Consider the system containing 60 mole % benzene, determine the bubble point and dew point pressure at 90 degree C and the bubble point and dew point temperature at90kPa.Explanation / Answer
1) The Antoine equationis a vapor pressure equation and describes the relation between vapor pressure and temperature for pure components. The Antoine equation is derived from the Clausius–Clapeyron relation.
111) P benzene = Calculated from above equation
= 81660
Mole fraction of benzene = 0.60 x 81660/ 760 = 64.46