Solution Thermodynamics – Practice Problem
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Question 1 of 15
1. Question
Which of the following is true regarding the sum ability relations?
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Question 2 of 15
2. Question
Which of the following estimation methods is best applicable to calculate the fugacity coefficient of a saturated polar gas?
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Question 3 of 15
3. Question
Which of the following methods is best applicable to calculate the activity coefficient of a nonpolar liquid in a ternary, immiscible solution?
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Question 4 of 15
4. Question
Which of the following is false regarding the gamma-phi approach for VLE?
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Question 5 of 15
5. Question
An excess property is
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Question 6 of 15
6. Question
In a binary solution, what happens to the other species (B) if a species (A) approaches Henry’s law?
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Question 7 of 15
7. Question
Which of the following is false regarding fugacity?
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Question 8 of 15
8. Question
Why does Gibbs energy serve as a generating function?
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Question 9 of 15
9. Question
Determine the number of degrees of freedom of partially decomposing CaCO3 to CaO and CO2 into an evacuated space.
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Question 10 of 15
10. Question
The enthalpy of a binary liquid system of species 1 and 2 at fixed T and P is represented by the equation: H = 400x1 + 600x2 + x1x2(40x1 + 20x2) in J/mol. Determine the partial enthalpies at infinite dilution Ĥ1∞ and Ĥ2∞ in J/mol.
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Question 11 of 15
11. Question
Determine the fugacity coefficients for nitrogen (1) and methane (2) in a binary mixture at 200 K and 30 bar if the mixture contains 40 mol-% N2. Experimental virial-coefficient data in cm3/mol are B11 = -35.2, B22 = -105.0, and B12 = -59.8.
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Question 12 of 15
12. Question
The thermodynamic properties of n-butane gas at 500 K and 50 bar is given by the Redlich/Kwong equation. Determine its residual entropy in J/mol·K.
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Question 13 of 15
13. Question
The hydrogenation of benzene to produce cyclohexane: C6H6 + 3 H2 = C6H12 is carried out over a catalyst at 600 K and 15 bar. The feed contains 3 mol H2 for each 1 mol C6H6. Determine the conversion of benzene to cyclohexane with K = 0.02874.
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Question 14 of 15
14. Question
A feed stock of pure n-butane is cracked at 750 K and 1.2 bar to produce olefins. Only two reactions have favorable equilibrium conversions at these conditions: (I) C4H10 = C2H4 + C2H6; (II) C4H10 = C3H6 + CH4. The of KI and KII are 3.856 and 268.4, respectively.
Assume a basis of 1 mol of n-butane feed. What are the values of the reaction coordinates in mol?
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Question 15 of 15
15. Question
A feed stock of pure n-butane is cracked at 750 K and 1.2 bar to produce olefins. Only two reactions have favorable equilibrium conversions at these conditions: (I) C4H10 = C2H4 + C2H6; (II) C4H10 = C3H6 + CH4. The of KI and KII are 3.856 and 268.4, respectively.
What is the mole fraction of methane at equilibrium?
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