NMR extremely simple questions....but.. please HELP! #1: #2 #3 #4 Equivalent pro

Question

NMR extremely simple questions....but.. please HELP!

#1:

#2

#3

#4

Equivalent protons in a molecule will result in one NMR signal. How many NMR signals would you predict for each of the following molecules? toluene pentanone butyl methyl ether benzene ethanol A compound to be analyzed by NMR should be dissolved in a solvent. Clearly the solvent should not have an NMR signal in the spectral area you are trying to analyze. Which solvents are appropriate for use in proton NMR? Heavy water (deuterium oxide) Acetone-d6 Water Chloroform Carbon tetrachloride Chloroform-d (deuterated chloroform) Benzene-d6

Explanation / Answer

1) (1) 4

(2) 2

(3) 2

4) 1

5) 3

2) deuterated chloroform

3) 1- 2.3 ppm , 2 - 3.9 ppm , 3- 1ppm , 4 - 2ppm

3.9 ppm - 2H , 2.2 ppm - 3H , 0.95 - 6H , 2ppm - 1H

4) 1- doublet

2- singlet

3- 7

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