Where is the carbonyl absorption found in the IR spectrum of a simple ester? A)2)5 ppm B)2250 cm^-1 C)3800 cm^-1 D)1740 cm^-1

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Quizplus · Accepted Answer

The carbonyl absorption in a simple ester is found in the IR spectrum at approximately 1740 cm-1. Option B (2250 cm-1) is too high and is typically associated with nitriles; option C (3800 cm-1) is too high and is typically associated with hydroxyl groups; option A (2)5 ppm is a unit of NMR not IR spectroscopy.

Where Is the Carbonyl Absorption Found in the IR Spectrum