KELLYCHEM2B2006SPMT2

KELLYCHEM2B2006SPMT2 - Name_ Student ID Number_ LAB Sec. #...

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Name__________________________________________________ Student ID Number_______________________________________ LAB Sec. # _____; TA: ____________; Lab day/time: __________ Prof. Peter B. Kelly Spring 2006 CHEMISTRY 2B (Sec. A) Midterm II Instructions: CLOSED BOOK EXAM ! No books, notes, or additional scrap paper are permitted. All information required is contained on the exam. Place all work in the space provided. If you require additional space, use the back of the exam. A scientific calculator may be used (if it is a programmable calculator, its memory must be cleared before the exam). (1) Read each question carefully. (2) For Parts I and II , there is no partial credit given and only answers marked on this cover page will be graded . (3) The last page contains a periodic table and some useful information. You may remove it for easy access. (4) If you finish early, RECHECK YOUR ANSWERS! (5) Circle your choice on the right for the multiple choice questions 1 – 16. U.C. Davis is an Honor Institution Possible Points Points #1–9. (3 points each) / 27 #10-16 (6 points each) / 42 #17 (16 points each) / 16 #18 (15 points each) / 15 #19 (16 points) / 16 Regrade Bonus (4 points) 4 / 4 Total Score (120) / 120 Multiple Choice (circle one) 1. a b c d e 2. a b c d e 3. a b c d e 4. a b c d e 5. a b c d e 6. a b c d e 7. a b c d e 8. a b c d e 9. a b c d e 1-10 total pts: 10. a b c d e 11. a b c d e 12. a b c d e 13. a b c d e 14. a b c d e 15. a b c d e 16. a b c d e 10-16 total pts:
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Midterm II Page 2 of 12 Initial:___________ Part I: Multiple Choice, Concepts Circle the correct answer and circle your response on the cover – No partial credit 1. (3 pts) For the following reaction starting at equilibrium: 2 S O 2 (g) + O 2 (g) ' 2 SO 3 (g) H = -197.8 kJ K c = 2.8 x 10 2 What will cause an increase in the number of moles of SO 3 ? a) increasing the volume of the reaction vessel b) adding a V 2 O 5 catalyst c) lowering the temperature d) removing O 2 (g) e) none of the above. 2.(3 points) The reaction: 4 NH 3 (g) + 5 O 2 (g) 4 NO (g) + 6 H 2 O (l) is described by the equilibrium constant a) K c = [] [ ] [] [] 6 2 4 5 2 4 3 O H NO O NH b) K c = [ ] [ ] [] [ ] 5 2 4 3 6 2 4 O NH O H NO c) K c = [] [ ] [] 4 5 2 4 3 NO O NH d) K c = [ ] [] [ ] 5 2 4 3 4 O NH NO e) none of the above 3.(3 pts) If temperature is constant and Q > K while H of the reaction < 0 then a) the reaction will go towards reactants and increasing temperature would favor reactants
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KELLYCHEM2B2006SPMT2 - Name_ Student ID Number_ LAB Sec. #...

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