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I. The temperature of a flash process must: i) Be less than the ice point of the mixture. ii) Be less than the bubble point of the mixture. iii) Be between the bubble point and dew-point of the mixture. iv) Be greater than the dew point of the mixture. J. In a binary distillation process: i) The required number of stages decreases with increases in the relative volatility of the feed. ii) The required number of stages increases with increases in the relative volatility of the feed. iii) The required number of stages increases with increases in the temperature of the feed. iv) The required number of stages decreases with increases in the temperature of the feed.

I. The temperature of a flash process must: i) Be less than the ice point of the mixture. ii) Be less than the bubble point of the mixture. iii) Be between the bubble point and dew-point of the mixture. iv) Be greater than the dew point of the mixture. J. In a binary distillation process: i) The required number of stages decreases with increases in the relative volatility of the feed. ii) The required number of stages increases with increases in the relative volatility of the feed. iii) The required number of stages increases with increases in the temperature of the feed. iv) The required number of stages decreases with increases in the temperature of the feed.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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I. The temperature of a flash process must: i) Be less than the ice point of the mixture. ii) Be less than the bubble point of the mixture. iii) Be between the bubble point and dew-point of the mixture. iv) Be greater than the dew point of the mixture. J. In a binary distillation process: i) The required number of stages decreases with increases in the relative volatility of the feed. ii) The required number of stages increases with increases in the relative volatility of the feed. iii) The required number of stages increases with increases in the temperature of the feed. iv) The required number of stages decreases with increases in the temperature of the feed.
Transcribed Image Text:I. The temperature of a flash process must: i) Be less than the ice point of the mixture. ii) Be less than the bubble point of the mixture. iii) Be between the bubble point and dew-point of the mixture. iv) Be greater than the dew point of the mixture. J. In a binary distillation process: i) The required number of stages decreases with increases in the relative volatility of the feed. ii) The required number of stages increases with increases in the relative volatility of the feed. iii) The required number of stages increases with increases in the temperature of the feed. iv) The required number of stages decreases with increases in the temperature of the feed.
A. Mixing of ideal gases is spontaneous because: i) The Gibbs energy change of the mixing process is positive. ii) The Gibbs energy change of the mixing process is negative. iii) The enthalpy change of the mixing process is negative. iv) The enthalpy change of the mixing process is positive. B. At a phase boundary for a pure substance: i) The enthalpy of one phase is the same as for the other. ii) The Gibbs energy of one phase is the same as for the other. iii) The entropy of one phase is the same as for the other. iv) The molar volume of one phase is the same as for the other. C. The chem potential is: i) The partial molar Gibbs energy of a chemical species in a mixture. ii) The reactivity of a substance. iii) The fraction of useful chemicals contained within a mineral. iv) The chemical energy stored in 1 kg of a particular substance. D. For phase equilibrium: i) The partial pressure of each chemical species must be the same in all phases present. ii) The molar volume of each chemical species must be the same in all phases present. iii) The partial temperature of each chemical species must be the same in all phases present. iv) The chemical potential of each chemical species must be the same in all phases present.
Transcribed Image Text:A. Mixing of ideal gases is spontaneous because: i) The Gibbs energy change of the mixing process is positive. ii) The Gibbs energy change of the mixing process is negative. iii) The enthalpy change of the mixing process is negative. iv) The enthalpy change of the mixing process is positive. B. At a phase boundary for a pure substance: i) The enthalpy of one phase is the same as for the other. ii) The Gibbs energy of one phase is the same as for the other. iii) The entropy of one phase is the same as for the other. iv) The molar volume of one phase is the same as for the other. C. The chem potential is: i) The partial molar Gibbs energy of a chemical species in a mixture. ii) The reactivity of a substance. iii) The fraction of useful chemicals contained within a mineral. iv) The chemical energy stored in 1 kg of a particular substance. D. For phase equilibrium: i) The partial pressure of each chemical species must be the same in all phases present. ii) The molar volume of each chemical species must be the same in all phases present. iii) The partial temperature of each chemical species must be the same in all phases present. iv) The chemical potential of each chemical species must be the same in all phases present.
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