quiz05key - (d A vinylic C-H bond(=C-H 4 Which part of the...

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Quiz 05 KEY November 29, 2006 3 Points Each. Please mark your answers on the scantron sheet. You may keep this copy. 1. Molecules absorb infrared radiation at frequencies that relate to . . . ? (a) the number of hydrogens in the molecule (c) the stretching and bending of bonds (b) the rate of collision between molecules (d) the number of atoms in the molecule 2. The term base peak in Mass Spectrometry refers to . . .? (a) the largest peak in the mass spectrum (c) the smallest peak in the mass spectrum (b) the baseline peak in the mass spectrum (d) the M + peak in the mass spectrum 3. Which of the following functional groups would NOT show an IR absorbance above 3000 cm -1 ? (a) An alkyne C-H bond (= C-H) (c) A carbonyl (C=O) (b) An alcohol (OH)
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Unformatted text preview: (d) A vinylic C-H bond (=C-H) 4. Which part of the electromagnetic spectrum interacts with the nuclear spins of protons ? (a) Radio Waves (b) X-Ray radiation (c) Visible Light (d) Infrared radiation 5. How many different resonances will be seen in the 13 C NMR spectrum of the following compound? CH 3 OH (a) 3 (b) 4 (c) 6 (d) 7 6. What would be the mass of the most abundant fragment of the following molecule in the mass spectrum? (atomic masses: C = 12, H = 1) (a) 27 (b) 43 (c) 55 (d) 70 7. How many different hydrogens would be observed in the proton NMR of the following compound? H 3 C CH 3 a) 4 b) 5 c) 7 d) 8 © 2006 Gregory R . Cook page 1 Chem 341 North Dakota State University...
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