How would you distinguish between the following pairs by use of IR spectroscopy only? Describe what absorption would be present or absent in each case. 1) pentanal and 2-pentanone 2) benzophenone and 3-pentanone 3) pentanal and 1-pentanol
Added by Gabriel D.
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Aldehydes have a characteristic C=O stretching absorption around 1720-1740 cm^{-1} and a C-H stretching absorption around 2700-2900 cm^{-1} for the aldehyde hydrogen. Ketones have a C=O stretching absorption around 1705-1725 cm^{-1}. Show more…
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