8Balances on Non-Reactive Processesx

8Balances on Non-Reactive Processesx - CHEE 2331 Chemical...

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CHEE 2331 Chemical Processes Chemical Processes Balances on Non Balances on Non - - Reactive Reactive Processes Processes Chapter 8, pages 357 Chapter 8, pages 357 - - 384 384 Department of Chemical and Department of Chemical and Biomolecular Biomolecular Engineering Engineering
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State and path functions… P V T 1 , H1 T 2 , H 2 T 3 , H 3 PV = znRT, H = f(T) P 1 V 1 T 1 P 3 V 3 T 3 (2) (1) W = Δ PV d(PV) =
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State and path functions… P V T 1 , H1 T 2 , H 2 T 3 , H 3 PV = znRT, H = f(T) P 1 V 1 T 1 P 3 V 3 T 3 (2) (1) W = Δ PV = d(PV)
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State and path functions… P V T 1 , H1 T 2 , H 2 T 3 , H 3 PV = znRT, H = f(T) P 1 V 1 T 1 P 3 V 3 T 3 (2) (1) W = Δ PV = d(PV) Work depends on the path Likewise, heat depends on the path But, Δ H = H 3 –H 1 = f(T 3 ) – F(T 1 ) depends on T 3 and T 1 and is independent of the path
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To find Δ H, we select a path that is easy to calculate. Types of Δ H: Change of temperature (sensible heat – no pressure effect) Heat capacity at constant pressure,
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This note was uploaded on 04/15/2010 for the course CHEE 2331 taught by Professor Alim during the Spring '08 term at University of Houston.

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8Balances on Non-Reactive Processesx - CHEE 2331 Chemical...

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