Please solve 4-3. If this system forms an azeotrope, show that the azeotropic co

Question

Please solve 4-3.

If this system forms an azeotrope, show that the azeotropic composition, (cn be given as sat 4-2. Given the one-parameter Margules equation, eq (4.28), obtain eq (4.29), ruct the p-x-y diagram for cyclohexane (1) and benzene (2) in vapor-liquid equilibrium at 40°C given that pisat0.243 atm, prat-0.241 atm, and the liquid-phase activity coefficients are given as Inn 0.458x and Iny 0.458x1. Make any assumptions that are reasonable and required to solve this problem. Please comment on the behavior of this system at intermediate compositions 4-4. As indicated by eg (4.2), the fugacity of each individual component in a liquid mixture is equal to the fugacity of that component in its vapor mixture at equilibrium. I there ever a situation where the total fugacity of the liquid phase and vapor phase are a equal? Please support you answer

Explanation / Answer

The vapor-liquid equilibrium (VLE) behavior of a benzene (C6H6)/toluene (C7H8) mixture is demonstrated in P-x-y and T-x-y diagrams. The blue line represents the liquid-phase boundary (bubble point) and the green line represents the vapor-phase boundary (dew point). Drag the black point on either diagram and the bar chart shows the amounts of liquid (blue) and vapor (green); the system contains a total of 1 mol. The mole fractions of benzene in each phase (xB for liquid phase, yB for vapor phase) are also shown in the bar graph. Use sliders to vary the temperature for the P-x-y diagram and the pressure for the T-x-y diagram. This system is modeled by Raoult's law because a benzene/toluene liquid phase is expected to be ideal.

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