HW12 - Cheung, Anthony Homework 12 Due: Dec 3 2006,...

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Cheung, Anthony – Homework 12 – Due: Dec 3 2006, midnight – Inst: McCord 1 This print-out should have 28 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. The due time is Central time. 001 (part 1 oF 1) 10 points Entropy is a state Function. 1. ±alse 2. True 002 (part 1 oF 1) 10 points ±or the Four chemical reactions I) 3O 2 (g) 2O 3 (g) II) 2H 2 O(g) 2H 2 (g) + O 2 (g) III) H 2 O(g) H 2 O( ) IV) 2H 2 O( ) + O 2 (g) 2H 2 O 2 ( ) which ones are likely to exhibit a positive Δ S ? 1. I, III and IV only 2. III and IV only 3. II only 4. I and II only 5. All have a positive Δ S . 003 (part 1 oF 1) 10 points Place the Following in order oF increasing en- tropy. 1. solid, gas, and liqiud 2. gas, liqiud, and solid 3. gas, solid, and liqiud 4. solid, liquid, and gas 5. liqiud, solid, and gas 004 (part 1 oF 1) 10 points ±or the evaporation oF water From an open pan at 25 C, the values oF Δ S For the water, the surroundings, and the universe must be, respectively, 1. positive, negative, positive. 2. positive, positive, positive. 3. None oF these is correct. 4. positive, negative, zero. 5. negative, negative, negative. 005 (part 1 oF 1) 10 points Which substance has the lower molar en- tropy? 1. Unable to determine 2. They are the same 3. Kr(g) at 298 K and 1.00 atm 4. Ne(g) at 298 K and 1.00 atm 006 (part 1 oF 1) 10 points Without perForming any calculations, de- termine whether the entropy oF the system increases or decreases in the evaporation oF water From damp clothes. 1. Unable to determine 2. decreases 3. The entropy does not change. 4. increases 007 (part 1 oF 1) 10 points ±or a given transFer oF energy, a greater change in disorder occurs when the temperature is high. 1. ±alse 2. True
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Cheung, Anthony – Homework 12 – Due: Dec 3 2006, midnight – Inst: McCord 2 008 (part 1 of 1) 10 points A friend says that as a plant grows and takes an unordered set of molecules and puts them in a highly organized system the second law of thermodynamics is violated. Your best response is that
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This note was uploaded on 11/11/2010 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.

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HW12 - Cheung, Anthony Homework 12 Due: Dec 3 2006,...

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