PCHEMCONCEPTS_Overall

Chemical potential of pure substances solids liquids

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Unformatted text preview: t (µT). •  For any closed system, it is natural to write U = f(V,T) & H = f(P,T) dU = Cv dT + πT dV (πT = T(∂P/∂T)V - P) and Cv = (∂U/∂T)V)) dH = CP dT + µT dP (µT = V - T(∂V/∂T)P and CP = (∂H/∂T)P)) •  For ideal gases: πT = 0 and µT = 0 : know why this is. •  Deriva;on of the following quan;;es:(∂U/∂T)P ,(∂U/∂P)T ,(∂H/∂T)V, (∂H/∂V)T etc… •  Defini;on of the Joule- Thomson Coefficient (µJT). Joule- Thomson experiment, Linde Process of Cooling Gases by Isenthalpic Expansion. •  Deriva;on of CP – CV = VT α2/κT. Day #17: Fall 2011 •  Second Law of Thermodynamics: The total entropy change for any process is posi;ve or zero: ΔS + ΔSsurr > 0 for a spontaneous (irreversible) process and ΔS + ΔSsurr = 0 for...
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This note was uploaded on 01/26/2014 for the course CHEM 3615 taught by Professor Aresker during the Spring '07 term at Virginia Tech.

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