Infrared Spectroscopy of Carboxylic Acid
Infrared spectroscopy is often used to determine the presence of a carbonyl group in a compound. It is a strong band appearing at about 1700 cm^-1 in aldehydes, ketones, and carboxylic acids and their derivatives. A carboxylic acid will show another carbon oxygen stretching band at:
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Photo attributed to ndrwfgg.