Answer: The shape of the infrared stretch of the O-H functional group in a carboxylic acid is very broad
Explanation:Infrared is a form of radiation that can travel through a vacuum.When a molecule absorbs infrared radiation, its chemical bonds vibrate. The bonds can stretch, contract, and bend. O-H functional group of carboxylic acid stretches when it absorbs infrared radiation.
The reason that the O–H stretch band of carboxylic acids is soo broad is because carboxylic acids usually exist as hydrogen-bonded dimers.
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