Chapter 13 - 1 Which of the following isomeric dibromopropanes has only a single peak in itsproton NMR spectrum A.1,1-dibromopropane

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1. Which of the following isomeric dibromopropanes has only a single peak in itsproton NMR spectrum? A. 1,1-dibromopropane B. 1,3-dibromopropane C. 1,2-dibromopropane D.2,2-dibromopropane 2. How many different types(sets) of hydrogens are there in 2,2-dimethylpentane? A. 2 B. 3 C.4 D. 5 3. Which of the following has only a single peak in its proton NMR spectrum? A. only I B. only II C.I and II D. I, II, and III 4. A compound is either cyclononane or cyclodecane. Which of the following is the mostuseful technique in identifying the compound? A. IR spectroscopy B.mass spectrometry C. proton NMR D. C-13 NMR 5. Which of the following gives the furthest downfield shift from TMS in its proton NMR spectrum? A. (CH3)4C B. (CH3)3N C. (CH3)2O D.CH3F 6. Which of the following gives the furthest downfield shift from TMS in its proton NMR spectrum? A. CCl4 B.CHCl3 C. CH2Cl2 D. CH3 Cl 7. How many different sets of equivalent protons are there for para-xylene (1,4-dimethylbenzene)? A. only 1 B.two C. three D. four 8. How many different sets of equivalent protons are there in the following compound?
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B. four C. five D. six 9. What is the multiplicity of the methylene hydrogens indicated in the proton NMR of the following compound? A. doublet B. triplet C. quartet D.pentet 10. What is the multiplicity of the methylene hydrogens indicated in the proton NMR of the following compound? A.singlet B. doublet C. triplet D. quartet 11. What are the approximate intensities of the four lines in the quartet from the proton NMR of diethyl ether, (CH3CH2)2O? (Assume distortion of the quartet is minimal.) A. 1:1:1:1 B. 1:2:2:1 C. 2:3:3:2 D.1:3:3:1 12. Which compound below fits the following proton NMR data? Triplet δ 1.22 (3H)
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This note was uploaded on 06/30/2011 for the course CHEM 243 taught by Professor Adcock during the Summer '11 term at New River Community College.

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Chapter 13 - 1 Which of the following isomeric dibromopropanes has only a single peak in itsproton NMR spectrum A.1,1-dibromopropane

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