first_hour_exam_20090921_answer_key

first_hour_exam_20090921_answer_key - Name:...

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Name: CHEM151L.003-F2009 EXAM 1 September 21, 2009 Name : Answer Key L A S T F I R S T Duke Unique ID No : This exam consists of 9 pages . Appendix A. Periodic Table Appendix B. Collection of Equations, Constants, and Definitions Please put your name at the tops of pages 1–9 . Ambiguous answers will get no credit. Initial of Last Name Your signature below indicates that you have taken this examination in accord with the Duke Community Standard. Signature : I will not lie, cheat, or steal in my academic endeavors. I will conduct myself honorably in all my endeavors. I will act if the Standard is compromised. 1
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Name: CHEM151L.003-F2009 EXAM 1 September 21, 2009 Problem No Points 1 /12 2 /12 3 /8 4 /8 5 /12 6 /12 7 /12 8 /16 9 /18 10 /15 TOTAL /125 2
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Name: Problem 1 (12 pts) a. Rank the following compounds in order of boiling point . ( Loudon, p70 ) (1 = HIGHEST boiling point, 4 = LOWEST boiling point) 2-methylhexane heptane 2,2-dimethylpentane 2,2,3-trimethylbutane 2 1 3 4 b. Rank the following compounds in order of acidity . ( Loudon, p103 ) (1 = MOST acidic, 4 = LEAST acidic) H 3 C O H O H 3 C O H Cl 3 C O H O N CH 3 3 H 3 C H 3 C H 2 3 4 1 Problem 2 (12 pts) ( lecture note ) Draw any additional resonance structure(s) for aniline. Are they all equivalent? If so, write “equivalent”. If not, circle the major (more important) resonance structure(s). N H H N H H N H H N H H Problem 3 (8 pts) ( lecture note ) Indicate whether the structures in the following pair are ( A ) constitutional isomers, ( B ) conformational isomers, ( C ) stereoisomers, ( D ) identical molecules or ( E ) none of the above. Br 3 F H C 2 H 5 HO H OH C 2 H 5 3 F and Answer: (C) or Stereoisomers 3
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Name: Problem 4 (8 pts) ( Loudon, p58 ) Name the following structure using IUPAC nomenclature.
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first_hour_exam_20090921_answer_key - Name:...

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