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Benzocaine's IR spectrum would show characteristic peaks for the following functional groups:
C=O stretch: A strong peak around 1680-1750 cm⁻¹ indicating the presence of the carbonyl group in the ester.
C-O stretch: Peaks around 1050-1300 cm⁻¹ indicating the presence of the C-O bond in the ester.
N-H stretch: A broad peak around 3300-3500 cm⁻¹ indicating the presence of the amine group.
Aromatic C-H stretch: Peaks around 3000-3100 cm⁻¹ indicating the presence of the aromatic ring.
Aromatic C=C stretch: Peaks around 1500-1600 cm⁻¹ indicating the presence of the aromatic ring.