![]() ![]() ![]() Composition – Ponchon-Savarit Plot Note the boiling temperatures of the pure components, water and ethanol, and the temperature of the azeotrope are different due to the pressure at which the data was taken: P = 1 kg/cm 2 (0.97 atm) 1 atm Water 99.1 o C 100 o C Ethanol 77.8 78.30 Azeotrope 77.65 78.15 x,y plots for ethanol-water? Įnthalpy vs. Why is this different than that determined from the y vs. x,y plots for ethanol-water? The azeotrope for ethanol-water is indicated as T = 77.65 o C and a concentration of 0.955. Why? Why are the boiling point temperatures of the pure components different than those determined from the y vs. An azeotrope is indicated by the composition at which the isotherm becomes vertical. Points between the saturated liquid line and the saturated vapor line represent a two-phase, liquid-vapor system. Temperature is represented by isothermal tie lines between the saturated liquid (boiling) line and the saturated vapor (dew) line. Composition – Ponchon-Savarit Plot 3 phases are shown on the plot – solid, liquid, and vapor. Composition – Ponchon-Savarit PlotĮnthalpy vs. ![]() composition plot to obtain this information. We will also need to employ energy balances, based on enthalpy, for certain separation problems. Composition – Ponchon-Savarit Plot We have begun to employ mass balances, both total and component. ![]()
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