261 f06 exam 3 soln key

261 f06 exam 3 soln key - Chemistry 261 F06 Dr Mbadugha...

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Chemistry 261 F06 Exam 3 Dr. Mbadugha Honor Code: I have neither given nor received unauthorized aid on this exam. I understand that I am not allowed to use any notes, books or resources (with the exception of molecular models and the Periodic Table). I also understand that removal of the exam from the testing room or receiving aid from any other person or person’s exam constitutes an honor code violation. I also understand that making any change to an exam answer after it has been graded, with the intent of submission for regarding is an honor code violation. Signature: _____________________________________________ Date: ____________ Please clearly print your first and last name: ___Soln Key _______________________ 1. A. (2 pt) Rank the following in order of expected boiling point (1 = highest, 4 = lowest): H 2 O CH 3 OH CH 2 F 2 CH 2 Cl 2 1 2 4 3 B. (4 pt) Circle the partner in each pair that has a greater heat of hydrogenation and place a star next to the partner that you would expect to have a greater heat of combustion. vs vs C C H 3 C C C H 3 C CH 3 H * * C. (2 pt) True or false: 1-octene has a higher heat of hydrogenation than 1-heptene. False (both are mono-substituted alkenes) 2. A. (4 pt) Describe the 13 C NMR DEPT spectrum (list signals using “abc” labels and state whether they are negative or positive – i.e. point up or down) of the compound below: a b c b a d e e e a - "up"/positive b - "down"/negative c - up/positive d - does not show up in DEPT spectrum e - up/positive 1
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B. (8 pt) Clearly describe the appearance of BOTH the 1 H (list signals using “abc” labels, and write chem. shift of signals, splitting patterns, and integration) and
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This document was uploaded on 11/04/2011 for the course CHEM 261 at UNC.

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261 f06 exam 3 soln key - Chemistry 261 F06 Dr Mbadugha...

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