Problem: List the distinctive features of the IR spectra of isopentyl acetate, isopentyl alcohol, and acetic acid and assign the absorption bands to the appropriate functional groups.

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Characteristic IR spectrum values:

  • Alcohol (OH stretch) → 3550 – 3200 cm-1
  • Esters 
    • C=O stretch → 1765 – 1735 cm-1 
  • Carboxylic Acids
    • OH stretch → 3200 – 2500 cm-1
    • C=O stretch→ 1725 – 1700 cm-1


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Problem Details

List the distinctive features of the IR spectra of isopentyl acetate, isopentyl alcohol, and acetic acid and assign the absorption bands to the appropriate functional groups.

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Our tutors have indicated that to solve this problem you will need to apply the Infrared Spectroscopy Table concept. You can view video lessons to learn Infrared Spectroscopy Table. Or if you need more Infrared Spectroscopy Table practice, you can also practice Infrared Spectroscopy Table practice problems.