2002 Final Exam

2002 Final Exam - Name_ ID # _ Organic Chemistry 2301...

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Name____________________________________ Chem 2301, Spring 2002, Final Exam, Page 1 ID # ____________________________________ Organic Chemistry 2301 Spring 2002 Final EXAM 350 Points 15 Pages plus tables 1) 10 points __________________ 2) 20 points __________________ 3) 20 points __________________ 4) 20 points __________________ 5) 30 points __________________ 6) 20 points __________________ 7) 30 points __________________ 8) 30 points __________________ 9) 30 points __________________ 10) 30 points __________________ 11) 30 points __________________ 12) 30 points __________________
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Name____________________________________ Chem 2301, Spring 2002, Final Exam, Page 2 13) 25 points __________________ 14) 25 points __________________ Total 350 points __________________
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Name____________________________________ Chem 2301, Spring 2002, Final Exam, Page 3 1. (10 points) Draw a Lewis dot structure for each of the following molecules; show all lone pairs. Indicate the hybridization at all atoms except hydrogen. (a) CH 3 CN (b) CH 3 COCH 2 CH 3 2. (20 points) The structure below is related to molecules observed in interstellar space and may have interesting electrical conducting properties. (a) Give the molecular formula for the above molecule. (b) Indicate the number of pi bonds and the number of sigma bonds in this molecule.
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Name____________________________________ Chem 2301, Spring 2002, Final Exam, Page 4
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Name____________________________________ Chem 2301, Spring 2002, Final Exam, Page 5 3. (20 points) Consider the molecule 2,3-dimethyl butane shown below. 2,3-dimethyl butane (a) Looking down the C2-C3 bond, draw a Newman projection for the highest energy conformer. Use one of the templates provided. (b) Looking down the C2-C3 bond, draw a Newman projection for the lowest energy conformer. Use one of the templates provided. (c) Looking down the C2-C3 bond, draw a Newman projection for the lowest energy eclipsed conformer. Use one of the templates provided. (d) Is there more than one possible answer to the question in part (c)? If so, explain why.
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This note was uploaded on 11/30/2010 for the course CHEM 2301 taught by Professor Gao during the Spring '07 term at Minnesota.

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2002 Final Exam - Name_ ID # _ Organic Chemistry 2301...

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