FTIR spectroscopy is a powerful tool for determining the functional groups present in a molecule. In the case of acetic acid, the FTIR spectrum can be used to identify the C=O stretch (1710 cm⁻¹), O-H stretch (3000-2500 cm⁻¹), C-O stretch (1200-1000 cm⁻¹), C-C stretch (1100-1000 cm⁻¹), and O-C-O deformation (950-850 cm⁻¹). These peaks provide a unique fingerprint for acetic acid, allowing it to be easily distinguished from other compounds. FTIR spectroscopy is widely used in the analysis of acetic acid in various samples, such as food, beverages, and pharmaceuticals, due to its high sensitivity and specificity.
