Practice Exam II - W06 KEY

Practice Exam II - W06 KEY - Dr. Bryan Enderle Name_...

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Name______________________________________________ Student ID Number___________________________________ LAB Sec. # ___; TA: __________; Lab day/time: __________ Dr. Bryan Enderle Winter 2006 CHEMISTRY 2B (Section A) Exam 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! U.C. Davis is an Honor Institution Possible Points Points #1–10. (3 points each) / 30 #11-13. (6 points each) / 18 #14-15. (12 points) / 12 #16. (17 points) / 17 #17. (20 points) / 20 #18. (12 points) / 12 Total Score (109) / 109 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 10. a b c d e 1-10 total pts: 11. a b c d e 12. a b c d e 13. a b c d e 11-13 total pts:
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Name: ____________________________________ Exam II (Page 2 of 12) Part I: Multiple Choice, Concepts (3 points each) Select the best answer and enter your choice on the cover sheet – No partial credit 1. (3 pts) Which of the following statements describe an acid? (a) A proton acceptor (b) An OH - acceptor (c) An OH - donor (d) An electron pair acceptor (e) An electron pair donor 2. (3 pts) When equal volumes of water and 0.450 M NH 4 Cl (aq) are mixed, the pH of the resulting solution will be… (a) between 1 and 7 (b) between 7 and 13 (c) equal to the value of the pK a for HCN (d) equal to 7 (e) equal to the pK b for CN - 3. (3 pts) How will addition of potassium fluoride to hydrofluoric acid affect the pH? (a) Lowers the pH (b) Raises the pH (c) The pH will not change (d) The pH cannot be determined (e) None of the above 4. (3 pts) A reaction will shift left if: (a) Q = K (b) Q > K (c) Q < K (d) Both (b) and (c) (e) The overall temperature is increased
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Name: ____________________________________ Exam II (Page 3 of 12) 5. (3 pts) Consider the following reaction:
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Practice Exam II - W06 KEY - Dr. Bryan Enderle Name_...

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