2011 Ochem II Exam 1A

2011 Ochem II Exam 1A - Name Chemistry 3153 Exam l A 100...

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Name: 1. Write your name on this page. Chemistry 3153 Exam lA, 100 pts Wednesday, February 9,2011 2. Check for a total of 11 pages (including this one and four at the end) 3. There should be 5 questions + 2 extra credit questions. 4. Sign the attendance sheet as it circulates. 5. Keep your exam flat on the desk in front of you. 6. The last sheet of the exam is blank and can be used as scratch paper. SHOW YOUR WORK, Be Specific With Your Answers and Write Legibly Good Luck When the exam is returned, your exam score will be on page 2.
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13) @ 1. (10) Fill in the correct term for each of the following definitions. a) Name given to the highest mass peak in the mass spectrum b) A substituent that increases conjugation by resonance in UV c) Process by which an IR absorption is split to two bands d) Process that determines the number of protons represented by an NMR signal e) The triplet at 6 77 in the 13C NMR spectrum results from this 2. (10) Multiple Choice. A) 12 ~3 C) 14 E = A (l)(c) = D) 26 (A)(MW) (I)(c) If 3.0 mg of A (MW 302) dissolved in 500 mL of ethanol shows an absorption of 0.54, what is the E value? A) 27180 ®2718 , 54360 r 5436 Functional group that shows two absorptions in the functional group region of the IR />" CHO L C) CaN Number of peaks expected in the signal for the underlined protons: Cl 2 CHCH 2 CH 3 A) 3 B) 4 @5 D) 6 Substituent that causes deshielding of the ortho protons of a benzene ring ~CI 3) Short Answer. a) (6) Predict the relative intensities
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2011 Ochem II Exam 1A - Name Chemistry 3153 Exam l A 100...

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