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16 Questions

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Advanced Thermodynamics Note 9

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Questions and Answers

What is the value of Pbubl in the BUBL P calculation?

132.40 kPa

What is the value of Pdew in the DEW P calculation?

101.52 kPa

Is the system in the two-phase region if Pdew < P = 110 kPa < Pbubl?

True

What is the value of V in the system?

0.7364 mol Signup and view all the answers

What is the value of K1 in the equation Ki = Pi_sat / P?

1.7795 Signup and view all the answers

Match the variables with their corresponding values:

x1 = 0.2859 x2 = 0.3810 x3 = 0.3331 y1 = 0.5087 y2 = 0.3389 y3 = 0.1524 Signup and view all the answers

What is phase equilibrium?

A static condition where no changes occur Signup and view all the answers

What is the maximum value of F according to the phase rule when two chemical species are involved?

3 Signup and view all the answers

The phase rule helps determine the number of variables that can change in equilibrium.

True Signup and view all the answers

What is Raoult's law applicable to?

Ideal gas and ideal solution phases Signup and view all the answers

Henry's law states that the partial pressure of a species in the vapor phase is directly proportional to what?

Its liquid-phase mole fraction Signup and view all the answers

What does the K-value indicate?

The tendency of a constituent species to favor the vapor phase Signup and view all the answers

The equation for modified Raoult’s law is yiP = xi______Pi

γi Signup and view all the answers

What happens during a 'flash' in a system?

A liquid partially evaporates when its pressure is reduced Signup and view all the answers

What is the azeotropic pressure for the system methanol/methyl acetate at T = 318.15 K?

73.76 kPa Signup and view all the answers

For a binary system at equilibrium, what is the relationship between vapor and liquid compositions?

The sum of the vapor mole fractions equals the sum of the liquid mole fractions Signup and view all the answers