Select the molecule that would not show a peak in an IR spectrum characteristic of a C≡≡C stretch.Select answer from the options belowethyne2-pentyne2-butyn-1-olpropyne
Question
Select the molecule that would not show a peak in an IR spectrum characteristic of a C≡≡C stretch.Select answer from the options belowethyne2-pentyne2-butyn-1-olpropyne
Solution
The molecule that would not show a peak in an IR spectrum characteristic of a C≡C stretch is 2-butyn-1-ol. This is because it contains a C≡O stretch instead of a C≡C stretch. The other molecules (ethyne, 2-pentyne, and propyne) all contain a C≡C stretch.
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