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The excess Gibbs energies for liquid argon-methane mixtures have been measured at several temperatures [A. G. Duncan and M. J. Hiza, I.E.C. Fundam. 11, 38 (1972)]. The results are =XAr (1-Xar){A-B(1-2xAr)}, RT where numerical values for the parameters are given as: T(K) 109.0 112.0 115.75 A 0.3024 0.2929 0.2792 B -0.01453 -0.01169 +0.05115 Compute the following: a) The activity coefficients of argon and methane at 112.0 K and XAr = 0.50. b) The molar isothermal enthalpy and entropy changes on producing an XA = 0.5 mixture from its pure components at 112.0 K.

The excess Gibbs energies for liquid argon-methane mixtures have been measured at several temperatures [A. G. Duncan and M. J. Hiza, I.E.C. Fundam. 11, 38 (1972)]. The results are =XAr (1-Xar){A-B(1-2xAr)}, RT where numerical values for the parameters are given as: T(K) 109.0 112.0 115.75 A 0.3024 0.2929 0.2792 B -0.01453 -0.01169 +0.05115 Compute the following: a) The activity coefficients of argon and methane at 112.0 K and XAr = 0.50. b) The molar isothermal enthalpy and entropy changes on producing an XA = 0.5 mixture from its pure components at 112.0 K.

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
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The excess Gibbs energies for liquid argon-methane mixtures have been measured at several temperatures [A. G. Duncan and M. J. Hiza, I.E.C. Fundam. 11, 38 (1972)]. The results are =XAr (1-Xar){A-B(1-2xAr)}, RT where numerical values for the parameters are given as: T(K) 109.0 112.0 115.75 A 0.3024 0.2929 0.2792 B -0.01453 -0.01169 +0.05115 Compute the following: a) The activity coefficients of argon and methane at 112.0 K and XAr = 0.50. b) The molar isothermal enthalpy and entropy changes on producing an XA = 0.5 mixture from its pure components at 112.0 K.
Transcribed Image Text:The excess Gibbs energies for liquid argon-methane mixtures have been measured at several temperatures [A. G. Duncan and M. J. Hiza, I.E.C. Fundam. 11, 38 (1972)]. The results are =XAr (1-Xar){A-B(1-2xAr)}, RT where numerical values for the parameters are given as: T(K) 109.0 112.0 115.75 A 0.3024 0.2929 0.2792 B -0.01453 -0.01169 +0.05115 Compute the following: a) The activity coefficients of argon and methane at 112.0 K and XAr = 0.50. b) The molar isothermal enthalpy and entropy changes on producing an XA = 0.5 mixture from its pure components at 112.0 K.
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