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Unformatted text preview: Name_________________________________________________________ Student ID Number______________________________________________ LAB Sec. # _____; TA: __________________; Lab day/time: _____________ Dr. Matthew P. Augustine Winter 2008 CHEMISTRY 2B (Sec. C) Final Exam 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. (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 second to 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 #21-28 (9 points each) / 72 Total Score (156) / 1.56 = % 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: Final Exam Page 2 of 15 Part I: Multiple Choice, Concepts Circle the correct answer and circle your response on the cover – No partial credit 1. (3 pts) The internal energy of an isolated system is A. dependent on the heat capacity of the system B. dependent on the work done by the environment C. dependent on heat absorbed by the system D. constant E. zero 2. (3 pts) Which of the following is most volatile? A. CBr 3 H B. CCl 4 C. CCl 3 H D. CBr 4 E. CBr 2 H 2 3. (3 pts) Which compound is the most likely to be soluble in water? A. hexane (C 6 H 14 ) B. benzene (C 6 H 6 ) C. butyl alcohol (CH 3 CH 2 CH 2 CH 2 OH) D. ethylene glycol (HOCH 2 CH 2 OH) E. iodine (I 2 ) 4. (3 pts) Consider the reaction: CH 4 (g) + 4 Cl 2 (g) CCl 4 ( ℓ ) + 4 HCl (g) Δ H o = -398 kJ/mol The equilibrium is shifted to the right if A. some hydrogen chloride is added B. the pressure is increased C. the temperature is increased D. some carbon tetrachloride is added E. none of these Final Exam Page 3 of 15 5. (3 pts) Which of the following weak acids has the weakest conjugate base? Acid: HC 7 H 5 O 2 HCN HOCl HF HOI pK a : 4.2 9.2 7.5 3.2 1.1 A. HF B. HCN C. HOI D. HOCl E. HC 7 H 5 O 2 6. (3 pts) Which of the following ionic compounds will produce an acidic solution?...
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