?The relative volatility \(\alpha_{12}\) is commonly used in applications involving
Chapter 13, Problem 13.73(choose chapter or problem)
The relative volatility \(\alpha_{12}\) is commonly used in applications involving binary VLE. In particular (see Ex. 13.1), it serves as a basis for assessing the possibility of binary azeotropy. (a) Develop an expression for\(\alpha_{12}\) based on Eqs. (13.13) and (13.14). (b) Specialize the expression to the composition limits \(x_{1}=y_{1}=0 \text { and } x_{1}=y_{1}=1\). Compare with the result obtained from modified Raoult’s law, Eq. (13.19). The difference between the results reflects the effects of vapor-phase nonidealities. (c) Further specialize the results of part (b) to the case where the vapor phase is an ideal solution of real gases.
Text Transcription:
alpha_12
x_1=y_1=0 and x_1=y_1=1
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