7.8 Figure 7.3-4 is the phase diagram for a van der Waals fluid. Within the vapor-liquid coexistence envelope one can draw another envelope representing the limits of supercooling of the vapor and superheating of the liq- uid that can be observed in the laboratory; along each isotherm these are the points for which (F). av T = 0 Obtain this envelope for the van der Waals fluid. This is the spinodal curve. The region between the coexistence curve and the curve just obtained is the metastable re- gion of the fluid. Notice also that the critical point of the fluid is metastable. f 1.4. 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5- 0.4 0.3 0.2 0.1- 0 Critical point Liquid vapor coexistence region. 6 -0.9 7-3 -25 -20 -1.5 -1.0 0.8/ 8 -0.7 9 10 Figure 7.3-4 The van der Waals fluid with the vapor-liquid coexistence region identified.

7.8 Figure 7.3-4 is the phase diagram for a van der Waals fluid. Within the vapor-liquid coexistence envelope one can draw another envelope representing the limits of supercooling of the vapor and superheating of the liq- uid that can be observed in the laboratory; along each isotherm these are the points for which (F). av T = 0 Obtain this envelope for the van der Waals fluid. This is the spinodal curve. The region between the coexistence curve and the curve just obtained is the metastable re- gion of the fluid. Notice also that the critical point of the fluid is metastable. f 1.4. 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5- 0.4 0.3 0.2 0.1- 0 Critical point Liquid vapor coexistence region. 6 -0.9 7-3 -25 -20 -1.5 -1.0 0.8/ 8 -0.7 9 10 Figure 7.3-4 The van der Waals fluid with the vapor-liquid coexistence region identified.

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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