The system ethanol(1) + bromoethane(2) forms an azeotrope containing 93.2 mol% bromoethane and having a minimum boiling point of 37.0°C at 760 mmHg. The following vapor pressure data are available:

(a) Use all of the available data to determine coefficients for equation log₁₀P^sat = A + B/T by performing a linear regression to find the coefficients A and B. Be sure to use temperature in Kelvin.

(b) Use the azeotropic point to determine the parameters for the van Laar equation.

(c) Generate a P-x-y diagram at 100C. Tabulate the data used to plot the diagram.

(d) Generate a T-x-y diagram at 760 mmHg. Assume that the activity coefficients are independent of temperature over the range of temperature involved. (This is the type of calculation necessary for generating an x-y diagram for a distillation at 760 mmHg.)

(e) Experimentally, the system is found to have a homogeneous maximum pressure azeotrope (Smyth, C.P., Engel, E.W. 1929. J. Am. Chem. Soc., 51:2660). How does this compare with your findings?

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P (mmHg) 100 400 760 1520 3800 Ethanol 34.9 63.5 78.4 97.5 Tsat (°C) Bromoethane 21.0 38.4 60.2 95.0