quiz06 - (b the distance between peaks which are split by...

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Quiz 06 December 04, 2006 3 Points Each. Please mark your answers on the scantron sheet. You may keep this copy. 1. How many different resonances would the following molecule show in the 1H NMR spectrum? CH 3 C CH 3 CH 3 C O O CH 2 CH 2 CH 3 (a) 2 (b) 3 (c) 4 (d) 5 2. What will be the splitting pattern for the resonance of the protons indicated below? CH 3 C CH 3 CH 3 C O O CH 2 CH 2 CH 3 (a) singlet (b) doublet (c) triplet (d) quartet 3. What will be the splitting pattern for the resonance of the protons indicated below? CH 3 C CH 3 CH 3 C O O CH 2 CH 2 CH 3 (a) singlet (b) doublet (c) triplet (d) quartet 4. What is the relative ratio of the intensities of the 4 peaks in a proton NMR resonance which is split into a quartet by three neighboring protons? (a) 1 : 1 : 1 : 1 (b) 1 : 2 : 2 : 1 (c) 2 : 4 : 4 : 2 (d) 1 : 3 : 3 : 1 5. The term coupling constant ( J ) refers to . . . (a) the integration of NMR resonances.
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Unformatted text preview: (b) the distance between peaks which are split by neighboring atoms. (c) the number of different resonances in a molecule. (d) the coupling of Gilman reagents with organic halides. 6. Which of the following statements is TRUE about NMR Spectroscopy? (a) The area under the peak (size of the peaks) is meaningless. (b) NMR stands for Nuclear Magnetic Radiation. (c) The energy difference between the two spin states is enormous. (d) Carbon 12, the most abundant isotope, is invisible on the NMR. © 2006 Gregory R . Cook ’ page 1’ Chem 341 North Dakota State University 7. Which of the following molecules does the C-13 NMR shown belong belong to? a) H 3 C CH 3 b) OH HO c) Br I d) © 2006 Gregory R . Cook ’ page 2’ Chem 341 North Dakota State University...
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This note was uploaded on 12/06/2011 for the course CHEM 341 taught by Professor Sun during the Fall '08 term at ND State.

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quiz06 - (b the distance between peaks which are split by...

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