2006MidtermExam#1 - Last Name: First Name: CH 310N MWF...

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Last Name: First Name: CH 310N MWF 8:00 9:00 (52820) Spring 2006 Dr. Brian M. Bocknack Midterm Exam #1 Thursday, February 16, 2006 7:00–9:00 p.m. Do not open this exam booklet until you are told to do so! This exam is closed book, meaning no books, notes, calculators, or molecular models are allowed. PLEASE WRITE YOUR NAME AT THE TOP OF EACH PAGE !!! Exams written in pencil are not eligible for regrades. Answers written in pencil with ink overlay will not be graded. If you use a pen, only blue or black ink is acceptable. Be prepared to show your valid UT ID card to a proctor when attendance is taken during the exam, and also when you turn in your exam. Page Page Page 2 (15) 8 (25) 14 (20) 3 (15) 9 (10) 15 (32) 4 (10) 10 (15) 16 (08) 5 (10) 11 (20) 17 (10) 6 (20) 12 (20) 18 (20) 7 (30) 13 (20) Total (300) Including this cover page, 3 blank pages (scratch paper), and the last 4 pages, which contain useful spectroscopic data, a periodic table, and pK a values, this exam contains 25 pages. DO ALL QUESTIONS BEST OF LUCK!!!
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Last Name: First Name: 2 1. (Problem worth 30 points; each part worth 5 points) READ THIS QUESTION CAREFULLY!!! In each part below, choose the best answer. Write the letter that corresponds to your choice in the box. There should only be one letter in each box. In other words, each question has one choice which is “best.” (a) Consider the molecule shown below. Which set of protons will give rise to the signal which appears farthest downfield in the 1 H NMR spectrum? C O CH 2 O CH 2 CH 3 CH 3 AB C D (b) Which of the following processes takes place when an organic molecule absorbs infrared radiation? A. molecular rotation B. nuclear “spin flip” C. bond vibration D. ionization (c) In lecture, we discussed how a DEPT–45 spectrum gives a signal for each nonequivalent protonated carbon atom. How many signals would be observed in the DEPT–45 spectrum of the molecule shown below? CH 3 CH 3 A. 3 B. 4 C. 6 D. 8 Page Total
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Last Name: First Name: 3 (d) Consider the four structures drawn below. In which structure is the highlighted bond most likely to be infrared inactive ? H A B C D (e) What is the IUPAC name of the ketone shown below? O A. 3-Methyl-4-hexanone B. 4-Methyl-3-hexanone C. 4-Ethyl-3-pentanone D. 2-Ethyl-3-oxopentane (f) Which of the following is the best choice of solvent for the formation of phenylmagnesium bromide by the reaction of bromobenzene with magnesium?
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2006MidtermExam#1 - Last Name: First Name: CH 310N MWF...

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