Question 17.4.3: Give the characteristic absorption peaks of CH3COOH....

Engineering Chemistry: Fundamentals and Applications [EXP-169979]

Give the characteristic absorption peaks of $CH_3COOH$ .

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• $CH_3COOH$ spectrum will have the following characteristic peaks.

• Broad band at 3030–3040 $\mathrm{cm}^{–1}$ due to hydrogen bonded O–H stretching of carboxylic acid.

• Band at 1720 $\mathrm{cm}^{–1}$ due to carbonyl $(C \xlongequal[]{} O)$ stretching of a saturated chain carboxylic acid.

• A band at 1280 $\mathrm{cm}^{–1}$ due to C–O stretching of –COOH group.

• A band at about 940 $\mathrm{cm}^{–1}$ due to O–H bending of –COOH group.

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