exam2 05 - Name_ Student ID Number_ LAB Sec. # _; TA: _;...

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Name__________________________________________________ Student ID Number_______________________________________ LAB Sec. # _____; TA: ____________; Lab day/time: __________ Dr. Matthew P. Augustine Winter 2005 CHEMISTRY 2B (Sec. C) 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 – 20. U.C. Davis is an Honor Institution Possible Points Points #1–12. (3 points each) / 36 #13-20. (6 points each) / 48 #21. (17 points) / 17 #22. (15 points) / 15 REGRADE BONUS 4/4 Total Score (120) / 1.2 = % 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 11. a b c d e 12. a b c d e 1-12 total pts: 13. a b c d e 14. a b c d e 15. a b c d e 16. a b c d e 17. a b c d e 18. a b c d e 19. a b c d e 20. a b c d e 13-20 total pts:
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Midterm II Page 2 of 10 Initial:___________ Part I: Multiple Choice, Concepts Circle the correct answer and circle your response on the cover – No partial credit 1. (3 pts) A weak base is a poor proton acceptor if A. If the pOH is much less than 7 B. K b is low and the pK a of its conjugate acid is low C. K b is low and the pK a of its conjugate acid is high D. K b is high and the pK a of its conjugate acid is low E. K b is high and the pK a of its conjugate acid is high 2. (3 pts) The pK a scale can be defined as A. the negative natural logarithm of K a B. the natural logarithm of K a C. the base 10 logarithm of K a minus 14 D. the negative base 10 logarithm of K a E. the base 10 logarithm of K a 3. (3 pts) The pH of a sodium acetate [NaOAc(aq)] solution is ____________ 7 and the pH of an ammonium chloride [NH 4 Cl(aq)] solution is ____________7. A. lower than, higher than
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This note was uploaded on 04/23/2008 for the course CHEM 2B taught by Professor Clemens during the Winter '08 term at UC Davis.

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exam2 05 - Name_ Student ID Number_ LAB Sec. # _; TA: _;...

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