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What Is The Ir For Carboxylic Acid? [Solved]

The carboxylic acid functional group has both an O-H bond and a C=O bond, so it’s like a combination of alcohols and ketones. That means it’ll show up on an IR spectrum with a really strong, wide band between 2800 and 3500 cm-1 for the O-H stretch. Pretty cool, huh?