Problem: Select the IR spectrum that corresponds best with 3-hydroxy-2-butanone.a)b)c)d)

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Given: 3-hydroxy-2-butanone

  • root: butane → 4 Carbons
  • modifier: one → ketone (at C2)
  • substitutent: hydroxy → OH (at C3)

Characteristic IR spectrum values:

  • Ketone: C=O stretch → 1750-1700 cm-1 
  • OH stretch → 3550 – 3200 cm-1 (broad)
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Problem Details

Select the IR spectrum that corresponds best with 3-hydroxy-2-butanone.

a)

Select the IR spectrum that corresponds best with


b)

Select the IR spectrum that corresponds best with


c)

Select the IR spectrum that corresponds best with


d)

Select the IR spectrum that corresponds best with

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