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Unformatted text preview: Chem120B Problem Set 3 Due: February 15, 2008 1. Problems 1733, 1737, 1738, 1739, I1, I2, I3, I13, 272, 273, 274, and 275 in McQuarrie & Simon’s Physical Chemistry textbook. For problem 1737 explain why f J /f has a local maximum. For problems I1 and I2 a handful of values of x is sufficient (say, 0.005, 0.01, 0.05, and 0.1). 2. In thermodynamics temperature is defined by the derivative 1 T = parenleftbigg ∂S ∂E parenrightbigg N,V (i) A system at temperature T absorbs a small amount of energy Δ E . By how much does its entropy change? Include in your Taylor series only the term proportional to Δ E (neglecting terms of order Δ E 2 and higher). (ii) Now consider two systems initially at temperatures T 1 and T 2 . What is the total change in entropy Δ S = Δ S 1 + Δ S 2 when a small amount of energy Δ E is transferred from system #1 to system #2? (iii) Our physical intuition says that heat flows from hot systems to cold systems. In other words, if T 1 > T 2 , then energy should spontaneously flow from system #1 to system #2. What does this, then energy should spontaneously flow from system #1 to system #2....
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 Spring '08
 Geissler
 Physical chemistry, Thermodynamics, pH, Fundamental physics concepts, entropy change, partition function

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