Exp_3_Infrared_Spectroscopy - Abstract: The absorbance for...

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Abstract: The absorbance for different concentration 2%, 4%, 6%, 8% is 1.1, 0.85,0 .76 and .56 respectively. The percentage of un known concentration was 8.5% and the absorbance was calculated .53. Objective: "To get acquainted and utilize IR for the purpose of quantitative analysis, i.e. determining the thickness of a polystyrene film, determine the concentration of an unknown mixture of isopropanol in toluene." Introduction: The infrared absorption spectrum was used to analyze a given mixture. The use of infrared radiation has an important analytical application in the quantitative and qualitative analysis of organic compounds and mixture. Different molecules have different IR absorption and as a result different spectra, depending on the structure and mass of the component atom. However, by matching the absorption spectra of unknown samples with the characteristic absorption frequencies or wavelengths of different functional groups, to identify the samples. In addition to identification of molecules or its functional groups, it is
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This note was uploaded on 03/24/2011 for the course CHEM 323 taught by Professor Basimali during the Fall '09 term at King Fahd University of Petroleum & Minerals.

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Exp_3_Infrared_Spectroscopy - Abstract: The absorbance for...

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