Question
Asked Oct 30, 2019
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This problem is (12.14) from a book  "Thermodynamics and Statistical Mechanics An Integrated Approach by M. Scott Shell"

12.14. Find an expression for the temperature dependence of the activity coefficient of a
component i in solution,
P, all x
In light of your result and Example 12.2, which exerts a greater influence on the
activity coefficient, the temperature or the pressure?
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12.14. Find an expression for the temperature dependence of the activity coefficient of a component i in solution, P, all x In light of your result and Example 12.2, which exerts a greater influence on the activity coefficient, the temperature or the pressure?

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Expert Answer

Step 1

The general expression for the activity coefficient of a species in a solution which deviates from its ideality is:

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4(T.P.= 4 (T.P) K,T In (7, (T.P.{r})x,)

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Step 2

In this expression, let the pressure be constant, then the temperature dependency of the activity coefficient is calculated as:

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K3T от ат ат ат , от any К,Т rig от in above expression as; Use Maxwell relation, S 3-() от КТ S,-S n7 К,Т /Px

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Step 3

The result in examp...

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й -т, дin y К.Т гл, ОР

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