final-2008-2009

final-2008-2009 - CHEM111 FINAL EXAM (Fall 2008) Name:...

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1 CHEM111 FINAL EXAM (Fall 2008) Name: (English) (Chinese) Student ID No. Problem Value Score 1 26 2 60 3 60 4 60 5 64 6 40 7 40 8 50 9 50 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Total 450 Note: This is a closed-book examination. You are required to answer ALL questions. Please write answers on the exam paper. Time is 180 min. 1. Give the IUPAC names of the following compounds :(26 points) SH HO SH HO HO H H O S CH 3 OH (a) (b) (c) (d)
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2 2. Choose from the following list ( A to N ) to fill in the blanks about the structures ( a-j ). ( Note: there is only one answer for most blanks. However, there may be more than one correct answer in one or more cases.) (60 points) i) Configuration: a : ; d : ; e : ; h : . ii) Stereochemical relationship: a and b : ; b and c : ; a and c : ; e and g : ; a and f : ; g and j : ; i and j : ; c and i : . A. 3S, 4S B. 3S, 4R C. 3R, 4S D. 3R, 4R E. 1R, 2R, 3S F. 1S, 2R, 3S G. 1R, 2S, 3R H. 1S, 2S, 3R I. Identical J. Enantiomers K. Diastereomers L. Meso compounds M. Constitutional isomers N. Conformational isomers a b c d e f g h i j H OH H HO H H HO HO OH H HO H OH OH H H O H HO O H HO O H OH O H OH HO OH HO OH
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3 3. Multiple choices. There is only one correct answer for each of the following questions, unless stated otherwise. (60 pts) (1) A solution results from mixing 100 mL of 1.0 M levorotatory R -(-)-lactic acid and 200 mL of 0.5 M dextrorotatory S -(+)-lactic acid. Which of the following statements is correct ? ( ) A. The solution is optically active and it is dextrorotatory B. The solution is optically active and it is levorotatory C. The solution is optically inactive D. Levorotatory R
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final-2008-2009 - CHEM111 FINAL EXAM (Fall 2008) Name:...

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