* The FTIR spectra below is probably... * | 100 % transmittance 80 80 95 20 Image adapted from https://sdbs.db.aist.go.jp wavenumber cm-1 0 4000 Methanol Ethanol Acetic acid Phenol Benzoic acid 3000 2000 1500 spectra adaptations Dr Phil Brown 2020. 1000 1500 to 400 cm-1 fingerprint region 400

* The FTIR spectra below is probably... * | 100 % transmittance 80 80 95 20 Image adapted from https://sdbs.db.aist.go.jp wavenumber cm-1 0 4000 Methanol Ethanol Acetic acid Phenol Benzoic acid 3000 2000 1500 spectra adaptations Dr Phil Brown 2020. 1000 1500 to 400 cm-1 fingerprint region 400

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter33: High-performance Liquid Chromatography

Section: Chapter Questions

Problem 33.14QAP

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Question

The FTIR spectra below is probably...*
100
% transmittance
80
60
9
20
Image adapted from https://sdbs.db.aist.go.jp
wavenumber cm-1
0
4000
Methanol
Ethanol
Acetic acid
Phenol
Benzoic acid
3000
*
2000
1500
spectra adaptations Dr Phil Brown 2020.
1000
1500 to 400 cm-1
fingerprint region
400

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Please refer to the images as much as you need to. For the following hydrocarbons, pick out 5 wavenumbers for each hydrocarbon, and give it its probable assignment for its structure. You may find this link useful: https://www.sigmaaldrich.com/US/en/technical-documents/technical-article/analytical-chemistry/photometry-and-reflectometry/ir-spectrum-table o-xylene (cm-1) : 985.76, 1021.06, 1052.51, 1119.30, 1383.43, 1465.62, 1495.11, 1604.66, 2859.82, 2874.76, 2922.19, 2937.08, 2968.08, 3016.57, 3049.67, 3063.02, 3105.51 m-xylene (cm-1) : 876.16, 904.28, 1039.26, 1094.05, 1169.56, 1376.70, 1397.17, 1458.12, 1491.51, 1538.93, 1557.96, 1591.83, 1612.18, 1652.69, 2730.72, 2863.59, 2920.44, 2944.72, 3015.77, 3104.24 p-xylene (cm-1) :1023.01, 1042.16, 1102.92, 1119.19, 1219.51, 1378.51, 1455.91, 1515.82, 1557.92, 1631.57, 1889.80, 2732.29, 2868.22, 2921.93, 2976.07, 2999.25, 3018.79, 3044.59, 3093.20, 3133.55, 3134.26
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