Give one absorption band that could be used to distinguish between 2-butyne and

ID: 950567 • Letter: G

Question

Give one absorption band that could be used to distinguish between 2-butyne and 1-butyne.

A) 1-butyne would show an sp C-H stretching vibration at 3300 cm-1 while 2-butyne would not.

B) 2-butyne would show an sp C-H stretching vibration at 3300 cm-1 while 1-butyne would not.

C) Both 1-butyne and 2-butyne would show an sp C-H stretching vibration at 3300 cm-1. Therefore, more information is needed.

D) 1-butyne would show an sp2 C-H stretching vibration between 3100-3020 cm-1 while 2-butyne would not.

A) 1-butyne would show an sp C-H stretching vibration at 3300 cm-1 while 2-butyne would not.

Since 2-butyne doesn't have sp C-H.

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