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CHM2046 - Exam 3 Answer Key

CHM2046 - Exam 3 Answer Key - CHM 2046 EXAM 3 FORM CODE A...

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CHM 2046 EXAM 3 FORM CODE A 04/10/2008 R = 8.3145 J/mol∙K 1. Which best defines a voltaic cell? A. A device in which electrons flow from cathode to anode. B. A device in which electrical energy is converted to chemical energy in order to do work. C. A device in which oxidation occurs at the cathode. D. A device that facilitates transfer of electrons from a reducing agent to an oxidizing agent. E. A device that drives a non-spontaneous reaction to become spontaneous. 2. Which of the following statements is TRUE about the entropy of a substance? 3. What is the value of S° of pure crystalline CaF 2 at 0 K? 4. Which of the following statements is TRUE about this reaction: 3NO 2 ( g ) + H 2 O ( l ) 2HNO 3 ( l ) + NO ( g )
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