A liquid mixture of 20% by mole benzene and the rest 2-propanol is in equilibrium with its vapor at 69°C. Estimate the equilibrium pressure and the composition of the vapor phase. Assume the 1- parameter Margules equation holds. At this

temperature, the vapor pressure of the benzene is 530 mm Hg and that of the 2-propanol is 434 mm Hg. Note that the system does form an azeotrope at this temperature whose composition is 61% by mole benzene (at a pressure of 685 mm Hg) (Storonkin and Morachevsky, 1956) If you make an assumption, please justify your assumption based on the results.

Transcribed Image Text:

CH3-CH-CH3 OH 2-propanol