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1a. A ternary mixture contains 20 mol % A , 40mol % B, and 40 mol...

1a. A ternary mixture contains 20 mol % A , 40mol % B, and 40 mol % C. At a pressure of 80 atm and a temperature of 75?C the fugacity coefficient of components A ,B and C in this mixture are 0.4, 0.6 and 0.8 respectively. What is the fugacity of the mixture?

Explain the basis of the equation you use in (a).

1b. For the system ethyl ethanoate (1) /n -heptane (2) at 450K , assuming the validity of the modified raoult’s law

Make a BULB P calculation for T = 450 K, x₁ = 0.06
Make a DEW P calculation for T = 450 K, y₁ = 0.06
Determine if the system is an azeotrope

Given the following data;

Iny₁ = 0.95X₂² ; Iny₂ = 0.95X₁² P₁^sat 80.0 kpa ; P₂^sat = 41.0 kpa.

2. a. A binary mixture consists of acetonitrile (1) and nitromethane (2) which conform closely to raoult’s law. Vapor pressures for the pure species are given by the following antoine equations;

In(P₁^sat ,Kpa) = 2945.5t?C+224..0

In(P₂^sat ,Kpa) = 2972.6t?C+209.0

Determine the bubble point pressure and vapor composition for a mixture of composition X₁ = 0.6 at a temperature of 65?C.

b. State the criteria for equilibrium for vapor -liquid composition.

c. Given the excess Gibb’s free energy of a solution as :

GEX1RT = B( 1-X₁) find the activity coefficient expression arising out of the binary solution model .

Show whether these expressions satisfy the Gibb’s-Duhem equation.

At 30?C and 1 atm, the volumetric data for liquid mixtures of benzene (b) and

Expert Solution

Form above table we can notice that at X₁ = 0.85 = y_1.

Hence, system forms Azeotrope.

Amanda K answered 3 days ago

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