AS Infrared specroscopy
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Last updated 2:23 PM on 11/30/25
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7 Terms
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O-H spectrum details
broad dip
smooth sweeping line, not jagged (like C-H)
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C-H spectrum details
more jaggedy lies in dip, not smooth
can be hidden/masked by other functional groups (e.g. broad O-H)
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Aldehyde/ketone vs carboxylic acid spectra
both have C=O bond but aldehyde/ketone WON’T have smooth, broad O-H dip, unlike carboxylic acid (COOH)
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Fingerprint region purpose
Region below 1500cm-1
Unique to EVERY molecule
Infrared spectrometers can use this region and search in large spectra database to identify molecule
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Alcohol spectra
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Carboxylic acid spectra
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Aldehyde/ketone spectra
Note 
Flashcards (30)