Question

Functional Groups Alcohol O-H Wavelength range, cm-1 3000-3500 Signal strength Broad peak Carboxylic acid O-H 2500-3500 Broad
IR of trans-cinnamic acid (10 points): 2.500-350 15 00 3067 3017 1686 OH: _ 3500-2500 cm Alkene/Aromatic C-H: _3100-3000 cm C
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ANSWER:

OH trans-cinnamic acid

IR of this molecule is as follows:

OH: 3500 cm-1

alkene/aromatic C-H: 3100-3000 cm-1

C=O: 1686 cm-1

alkene C=C : 1631 cm-1

Aromatic C=C: 1500-1450 cm-1

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