chem263_ps2

# chem263_ps2 - work. (a) How much heat ﬂows into the...

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Physical Chemistry 263. Prof. Jose A. Gascon Textbook: Atkins 8th Edition. Problem Set 2: The First Law. Due date September 21 2006 Problem 1 Calculate the work done by a perfect gas that expands adiabati- cally, going from an initial state T i , V i to a ﬁnal state T f , V f . Show that under these conditions T F T i = ± V i V f ² 1 c where c = C V /nR . Hint: dw = C V dT = - PdV (1) C V dT = - nRT V dV (2) C V T dT = - nR V dV (3) Problem 2 Show that the Joule-Thomson coeﬃcient μ is equal to zero for a perfect gas. (Hint: show that ( ∂H ∂P ) T = 0) Problem 3 When a system is taken from state A to state B along the path ACB in Fig. 1, 80 J of heat ﬂows into the system and the system does 30 J of

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Unformatted text preview: work. (a) How much heat ﬂows into the system along path ADB if the work done is 10 J (b) When the system is returned from state B to state A along a curved path, the work done on the system is 20 J. Does the 1 Figure 1: system absorb of liberate heat, and how much? (c) If U D-U A = +40 J, ﬁnd the heat absorved in the process AD and DB. Problems from Atkins Chapter 2. Exercise 2.2(a), Exercise 2.4(a), Exercise 2.8(a), Exercise 2.14(a), Ex-ercise 2.22(a), Exercise 2.27(a), and Problem 2.20. 2...
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## This note was uploaded on 08/26/2010 for the course CHEM 263 taught by Professor Gascon during the Fall '06 term at UConn.

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chem263_ps2 - work. (a) How much heat ﬂows into the...

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