final 3 - Name_ Student ID Number_ Lab TA Name and Time_...

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Name______________________________________ Student ID Number___________________________ Lab TA Name and Time_______________________ Fall 2007 CHEMISTRY 2C Final Exam 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. (1) Read each question carefully. (2) There is no partial credit for the problems in Part A and B. (3) Please circle and enter multiple choice answers in the table. U.C. Davis is an Honor Institution Possible Points Points 1–15. 45 points 16. 5 points 17. 10 points 18. 10 points 19. 10 points 20. 10 points 21. 10 points Total Score (100) 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 13. a b c d e 14. a b c d e 15. a b c d e 1-15 total pts:
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Name: T.A.’s name: Part A : Multiple Choice. Circle the correct answer and enter on front cover. No partial credit. 1. Which of the following does NOT affect the rate of a chemical reaction? a. enthalpy of reaction ( Hº) b. activation energy (E a ) c. catalyst d. temperature e. none of these 2. If a central ion has a coordination number of 6, the geometry of the complex ion is expected to be: a. trigonal bipyramidal b. tetrahedral c. octahedral d. square planar e. none of these 3. Choose the correct shape, ligand field, and number of unpaired electrons for [CoI 6 ] 3- a. octrahedral, weak, 2 b. tetrahedral, weak, 4 c. square planar, strong, 0 d. octahedral, strong, 5 e. octahedral, weak, 4 4. If [Co(NH 3 ) 6 ] 3+ absorbs light in the blue part of the visible spectrum, then which of the following colors may be observed for [Co(CN) 6 ] 3- ? a. blue b. red c. green d. purple e. yellow 5. Estimate K eq for the reaction at 298 K: Mg(s) + 2Ag + (aq) 2Ag(s) + Mg 2+ (aq) Ag + + e- Ag(s) Eº = 0.80 V M g 2+ (aq) + 2e- Mg(s) Eº = -2.356 V a. 5.7 x 10 106 b. 2.0 x 10 53 c. 3.7 x 10 52 d. 1.1 x 10 27 e. 1.1 x 10 -107
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Name: T.A.’s name: 6. Which element has the largest number of unpaired electrons? a. Cu 2+ b. Fe 3+ c. V 3+ d. Ni 2+ e. Zn 2+ 7. The most penetrating radiation is of what type? a. alpha b. beta c. gamma d. electron e. neutron 8. One mole of electrons has a charge of? a. 96,485 A b. 1.60 x 10 -19 C c. 6.02 x 10 23 A d. 96,485 C e. none of these 9. In the Arrhenius equation (ln k = -E a /RT + ln A), the symbol A denotes: a. initial concentration of A b. activation energy c. rate constant d. frequency factor e. absolute temperature 10. What is the half-life for a first-order reaction with a rate constant of 0.032 min -1 . a. 111 min
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This note was uploaded on 09/01/2009 for the course CHEM 2A taught by Professor Guo during the Winter '08 term at UC Davis.

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final 3 - Name_ Student ID Number_ Lab TA Name and Time_...

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