090204_lecture10

090204_lecture10 - Physical Chemistry I for Biochemists...

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1 Physical Chemistry I for Biochemists Chem340 Lecture 9 (2/2/09) Yoshitaka Ishii HW3 P2.11 Ch3.1-3.4 (skip printing p2 if you have lec. note 9) HW4 Announcement • HW4 is already up at the web site. • Exam 1 on next Friday. Please solve HW4 early and practice HW3 for preparation. • We will include some review materials in the next few weeks. The area to be covered is Ch1-3 & the beginning of Ch4.
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2 Partial Differentials for P, T, V • There are 6 possible partial differentials T m V P Vm T P P m T V T m P V Vm P T P m V T Q. How many are independent functions? In general, Z Z x y y x = 1 1 = Y X Z x z z y y x T m V P T m P V =1/ T m V P P m T V Vm P T = -1 Æ Æ Æ Any two of them having different colors are independent. Cyclic Rule: Some of the Partial Derivatives Have Special Meaning P T V V = 1 β T P V V = 1 κ : Volumetric thermal expansion coefficient : Isothermal Compressibility
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3 P2.11) Calculate Δ H and Δ U for the transformation of 1.00 mol of an ideal gas from 27.0°C and 1.00 atm to 327°C and 17.0 atm if C P , m = 20.9 + 0.042 T K in units of J K 1 mol 1 = = Δ 2 1 2 1 T T mp T T P dT T C n dT T C H ) ( ) ( For ideal gas, use = = Δ 2 1 2 1 T T mv T T v dT T C n dT T C U ) ( ) ( Q. Which is a correct equation? Choose all correct ones.
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This note was uploaded on 10/11/2009 for the course CHEM 340 taught by Professor Staff during the Spring '08 term at Ill. Chicago.

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090204_lecture10 - Physical Chemistry I for Biochemists...

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