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OUTLINE OF CHAPTER 8

# OUTLINE OF CHAPTER 8 - OUTLINE OF CHAPTER 8 Multicomponent...

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OUTLINE OF CHAPTER 8 Multicomponent Systems!! We said that for one component systems, we need two variables to completely chatacterize it. For multicomponent systems, we expect Naïve expectation Observation Change of volume in mixing Change of Enthalpy in mixing That is:

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Let any property (Volume, enthalpy, etc) be represented by θ Then, we write: We also want θ to be homogeneous (intensive property) Then and So that as long as the relative amount of components is kept constant θ does not change. Then we write We will show that
We take a derivative Multiplying by N 1 and using We get or Now take derivative w.r.t. N i (I not 1)

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Thus using and we get or THUS WE DEFINE PARTIAL MOLAR PROPERTY as follows So we can write
Therefore and

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GENERALIZED GIBBS-DUHEM EQUATION We start with Is also called chemical potential We also write But Comparing we get
Similarly But, Then But N θ can be considered a function of P and T .

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OUTLINE OF CHAPTER 8 - OUTLINE OF CHAPTER 8 Multicomponent...

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