Hi I was a bit confused regarding what functional groups this graph would show.

Question

Hi I was a bit confused regarding what functional groups this graph would show. Can someone show how the functional groups are determined? Thanks! Determination of an unknown using Infrared Spectroscopy Post lab Assignment: The Unknown A sample has the molecular formula C,H20. You can take an IR of the sample and compare it to a bank of compounds to determine its identity. Assume the unknown is corrosive and toxic - use proper safety precautions, 1. Print your spectrum and attach the spectrum to this page. 2. Calculate the degrees of unsaturation: 3. List the wavenumbers for the major peaks and the corresponding functional groups: IR peak (cm) Functional group(s)

Explanation / Answer

2924 Cm-1 = SP3 C-H stre. Aliphatic C-H bond

1697 Cm-1 = Carbonyl (C=O) fuctional this may be Keto group

1100 Cm-1 = C-O or C-C bonds

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