Answer the following statement(s) true (T) or false (F)
A. The Wilson equation provides a way to incorporate temperature dependence into the model parameters.
B. The van Laar equation allows you to predict the behavior of a mixture with knowledge of only the pure component properties.
C. UNIFAC is an approach that allows you to estimate the activity coefficients in a mixture based on knowledge of the structure of the pure components.
D. Activity coefficients do not change with pressure, only with temperature and composition.
E. All of the above.
A. Incorrect. This is true. Equations 11.97 and 11.98 incorporate the system temperature (T) into the Wilson parameters (?).
B. Incorrect. This is true and one benefit of using this approach.
C. Incorrect. This is true. The end of section 11.8.1 has an introduction to the UNIFAC and UNIQUAC methods.
D. Correct. The activity coefficient is a weak function of pressure, but is not independent of pressure.
E. Incorrect. Only one statement is false.
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