2425e1 - Sample Exam CHEM 2425 EXAM # 1 ( Chapters 12-15)...

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CHEM 2425 EXAM # 1 ( Chapters 12-15) Dr. Pahlavan Part I. - Multiple choice questions (3 points each) _____1. How many sets of equivalent protons are there for CH 2 Cl –CH 2 - CH 2 Cl A. 1 B. 2 C. 4 D. 6 _____2. Which of the following is an example of a conjugated dienes? A. B. C. D. _____3. Which of the following is the most likely fragment ion formed at 57? A. CH 3 CH 2 + B. CH 3 CH 2 CH 2 CH 2 + C. CH3 CH 2 CH2 + D. CH=CH 2 + _____ 4. In the proton NMR spectrum for1-chlorobutane, which of the proton has the lowest field resonance (lowest chemical shift)? CH 2 Cl – CH 2 – CH 2 – CH 3 ( I ) (II) (III) ( IV) A. I B. II C. III D. IV _____5. What is the structure for a compound, C 4 H 8 Br 2 , which has the following proton NMR spectrum? Doublet δ 1.7 ( 6 H ) and Quartet δ 4.4 ( 2 H ) A. 1,1-dibromobutane B. 1,2-dibromobutane C. 1,3-dibromobutane D. 2,3-dibromobutane _____ 6. What kind of compound has a sharp IR absorption band in the region of 1710 cm -1 and a broad band at 3300 cm -1 ? A. Ethanol B. Acetic Acid C. Acetone D. Diethyl ether _____7. Examining the Proton NMR spectrum of a compound allows us to: A. Determine the types of functional groups present in the compound. B. Determine the C-H framework of the compound. C. Determine the molecular weight of the compound. D. Determine the nature of the conjugated pi electrons system in the compound. _____ 8. Given M
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This note was uploaded on 06/29/2010 for the course CHE 202 taught by Professor Richard during the Spring '05 term at SUNY Buffalo.

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2425e1 - Sample Exam CHEM 2425 EXAM # 1 ( Chapters 12-15)...

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