C102Quiz7Ans - Assessment...

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Graded Quiz 7 Penelope Codding Started: March 12, 2010 15:03 Questions: 10 Finish Save All Help 1. (Points: 1) The second law of thermodynamics states that __________. a. E = q + w b. rxn = n H° f (products) - m H° f (reactants) c. for any spontaneous process, the entropy of the universe increases d. the entropy of a pure crystalline substance is zero at absolute zero e. S = q rev /T at constant temperature Save Answer 2. (Points: 1) Which of the following statements is true? a. Processes that are spontaneous in one direction are spontaneous in the opposite direction. b. Processes are spontaneous because they occur at an observable rate. c. Spontaneity can depend on the temperature. d. All of the statements are true. Save Answer 3. (Points: 1) Of the following, the entropy of gaseous __________ is the largest at 25°C and 1 atm. a. H 2 b. C 2 H 6 c. C 2 H 2 d. CH 4 e. C 2 H 4 Save Answer 4. (Points: 1) S is positive for the reaction __________. a.
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C102Quiz7Ans - Assessment...

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