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CHEM 202 Practice Exam 5

CHEM 202 Practice Exam 5 - C HEM202 Practice Exam 5 Fall...

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CHEM202 Practice Exam 5 Fall 2010 NAME: Dr. Thomas Berg Total Points 125 Questionsl-25 : 5 points each
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1. Classify the molecule below according to the location of its carbonyl group and the number of carbon atoms. a) aldotriose b) aldotetrose c) aldopentose d) ketotriose e) ketotetrose 2. Which of the following aromatic compounds is the most stable? IV. I. 0 0 II. V. 0 0 N 0 0 .- H I m. e
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3. \Vhat is the major product of the following reaction? Br--CJ-Br + N I H N. 1. v. n. ill 4. Six-membered cyclic hemiacetals and five-membered cyclic hemiacetals are called respectively:
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5. At which carbon are the following sugars epimers of each other? RC=O HC=O -H Ro- H- -OR HO - -R g- -H HO - -OR CH20H CH20H a) C-1 -oH H- b) C-2 c) C-3 d) C-4 e) C-5 6. L-Mannose (an aldohexose) has enantiomer(s) and diastereome( s). 7. 'What is an acceptable name for the following structure? s Q
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8. What is the major product of the following reaction? /\ --,. ... ? :N :NH ~ 1 Br :hNH IV. 'V ll. J \ :N :NH V. I Br
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