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Unformatted text preview: Version PREVIEW Quiz 6 hawkins (53755) 1 This printout should have 8 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. LDE Stat Thermo Theory 001 001 10.0 points When calculating positional entropy using the Boltzmann formula ( S = k ln W ), which of the following statements is/are true? I) An experimentally determined value of W will be less than the ideal value. II) For the same number of molecules at ab solute zero, the experimental value of W for HF will be greater than the experi mental value for CO. III) At absolute zero, the positional entropy of a group of molecules with one orienta tion will equal zero. 1. II only 2. I only 3. I, II, III 4. I, III correct 5. II, III 6. I, II 7. III only Explanation: Statement I is true because ideal values assume that IMF arent present and therefore dont influence the likelihood of a molecule adopting a particular orientation. Statement II is false because HF has a stronger IMF which thus more dramatically perturbing the value of W . Statement III is true because 1 raised to any power is 1 and the natural log of 1 is 0....
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 Spring '07
 Holcombe

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