CHEG 3043 Equilibrium Staged Separations Processes VLE and Flash Concepts and Te
ID: 500141 • Letter: C
Question
CHEG 3043 Equilibrium Staged Separations Processes VLE and Flash Concepts and Terms Quiz Thursday 23 March 2017 CLOSED BOOK COLLABORATION IS ENCOURAGED No, An expression relating the saturated vapor pressure of a liquid to its Activity Coeficient ers that depend on the substance in terms of 2 or 3Parame4 The region on a phase diagram that lies between the saturated liquid and saturated with changing molar composition The rate of change of 3. Subcooled liquid a particular molecular species A system existing above the bubble point on a P-x-y diagram 4. pressed liquid A VLE model wherein ideal gas behavior and ideal solution behavior are A thermodynamic quantity indicating a hemical species "tendency to c Ideal solution A state of matter where the distinction between liquid and gas phases 7. Raoult's law disa forms asa vapor approaches The condition at which the first drop of liquid 8. Modified Raoult's law ion of a the VLE The Gamma-Phi formulation for VLE, applicable to real situations Antoine equation A static condition in which no changes occur in the macroscopic 10, Dew point properties of a system with time The chemical potential of component i 11, Bubble point A process in which a liquid at a pressure at or above P Mle partially Levaporates when the pressure is reduced producing a 2-phase System 12, Chemical Potential, u Correction factor for systems deviating from ldeal Solution theory K-value, 13 A system existing above the dew line on a T-x-y diagram The condition at which the first drop of vapor forms as a liquid approach the VLE on of a phase diagram The state of coexistence of liquid and vapor phases 16, LAR The ratio of the vapor phase and liquid phase compositions for a Absence of intermolecular m, which is also a measure of its "lightness nt in a VLE forces and ne ble volume A liquid mixture in which the molecular species are not too different in ize and are of the same chemical nature 18. Critical point A system existing below the bubble point, when located on a T-x-y VLE envelope A VLE model wherein ideal gas behavior is assumed Fugacity A graphical method used on phase diagrams to determine the relativ amounts of each phase present Assumptions underlying the ideal gas equation of stateExplanation / Answer
1. Activity coefficient
2. VLE
3. Subcooled liquid - a system that exixts above the bubble point on p-x-y diagram
4. compressed liquid
5. Superheated gas - a system that exixts above the dew point on T-x-y diagram
6. Ideal solution- A liquid mixture in which molecular species are not too different in size and are of same chemical nature..
7. Raoult's law - Assumptions underlying ideal gas equation of state
8. modified Raoult's law - correction factor for systems deviating from - Ideal solution theory
9. Antoine Equation - An Expression relaing the saturated vapor pressure of the liquid to it's temperature in terms of 2 or 3 parameters that depends upon the substance
10. Dew point- Condition at which first drop of liquid forms as the vapor approaches VLE region...
11. Bubble point - Condition at which first drop of vapor forms as the liquid approaches VLE region
12. Chemicalpotential ui - chemical potential of the component i
13. Ki - The ratio of the vapor phase and liquid phase compositions for aomponent in a VLE system, also is the measure of the lightness
15. y o - The Gamma phi formulation for VLE that exists for real solutions
14. Equilibrium - static condition in which practically no change take place in the macroscopic properties of the system.
18. Critical point - state of co-existence of liquid and vapor phases
19.
20. Fugacity - thermodynamic quantity that tells the tendency to escape.