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2. True/False (If your T/F look similar, write the full word! 1. Using generalized correlations for a pure substance requires only system temperature, pressure and acentric factor. 2. Excess properties measure the deviation of a real mixture from the same mixture modeled as an ideal-gas-mixture. 3. Computing turbine efficiency requires enthalpy changes associated with the real process and with a corresponding isentropic process for the same outlet pressure. 4. The Rankine cycle is used in practical steam plants because the Rankine cycle has a higher theoretical efficiency than the corresponding Carnot cycle between the same high and low temperatures. 5. In the Vapor-Compression cycle, the compressor compresses the liquid refrigerant to a lower pressure. 6. A binary VLE system is at phase equilibrium when the sum of the chemical potential of each component in each phase is zero. 7. Lost work cannot be zero for a real turbine process. 8. The heat of mixing must be computed with the assumption that the mixing occurs infinitely slowly. 9. The entropy change associated with mixing ideal gases is always greater than zero. 10. In PXY and TXY diagrams, because there is no space between the two curves at the a = 0 and r = 1, pure substances cannot exist in vapor-liquid equilibrium.

2. True/False (If your T/F look similar, write the full word! 1. Using generalized correlations for a pure substance requires only system temperature, pressure and acentric factor. 2. Excess properties measure the deviation of a real mixture from the same mixture modeled as an ideal-gas-mixture. 3. Computing turbine efficiency requires enthalpy changes associated with the real process and with a corresponding isentropic process for the same outlet pressure. 4. The Rankine cycle is used in practical steam plants because the Rankine cycle has a higher theoretical efficiency than the corresponding Carnot cycle between the same high and low temperatures. 5. In the Vapor-Compression cycle, the compressor compresses the liquid refrigerant to a lower pressure. 6. A binary VLE system is at phase equilibrium when the sum of the chemical potential of each component in each phase is zero. 7. Lost work cannot be zero for a real turbine process. 8. The heat of mixing must be computed with the assumption that the mixing occurs infinitely slowly. 9. The entropy change associated with mixing ideal gases is always greater than zero. 10. In PXY and TXY diagrams, because there is no space between the two curves at the a = 0 and r = 1, pure substances cannot exist in vapor-liquid equilibrium.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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2. True/False (If your T/F look similar, write the full word! 1. Using generalized correlations for a pure substance requires only system temperature, pressure and acentric factor. 2. Excess properties measure the deviation of a real mixture from the same mixture modeled as an ideal-gas-mixture. 3. Computing turbine efficiency requires enthalpy changes associated with the real process and with a corresponding isentropic process for the same outlet pressure. 4. The Rankine cycle is used in practical steam plants because the Rankine cycle has a higher theoretical efficiency than the corresponding Carnot cycle between the same high and low temperatures. 5. In the Vapor-Compression cycle, the compressor compresses the liquid refrigerant to a lower pressure. 6. A binary VLE system is at phase equilibrium when the sum of the chemical potential of each component in each phase is zero. 7. Lost work cannot be zero for a real turbine process. 8. The heat of mixing must be computed with the assumption that the mixing occurs infinitely slowly. 9. The entropy change associated with mixing ideal gases is always greater than zero. 10. In PXY and TXY diagrams, because there is no space between the two curves at the a = 0 and r = 1, pure substances cannot exist in vapor-liquid equilibrium.
Transcribed Image Text:2. True/False (If your T/F look similar, write the full word! 1. Using generalized correlations for a pure substance requires only system temperature, pressure and acentric factor. 2. Excess properties measure the deviation of a real mixture from the same mixture modeled as an ideal-gas-mixture. 3. Computing turbine efficiency requires enthalpy changes associated with the real process and with a corresponding isentropic process for the same outlet pressure. 4. The Rankine cycle is used in practical steam plants because the Rankine cycle has a higher theoretical efficiency than the corresponding Carnot cycle between the same high and low temperatures. 5. In the Vapor-Compression cycle, the compressor compresses the liquid refrigerant to a lower pressure. 6. A binary VLE system is at phase equilibrium when the sum of the chemical potential of each component in each phase is zero. 7. Lost work cannot be zero for a real turbine process. 8. The heat of mixing must be computed with the assumption that the mixing occurs infinitely slowly. 9. The entropy change associated with mixing ideal gases is always greater than zero. 10. In PXY and TXY diagrams, because there is no space between the two curves at the a = 0 and r = 1, pure substances cannot exist in vapor-liquid equilibrium.
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