The signal at 3300 cm-1 in an IR spectrum most likely corresponds to a terminal alkyne.

Here's why:

1. Terminal alkynes have a C-H stretch that appears in the 3300 cm-1 region of an IR spectrum.

2. Carboxylic acids usually have a broad signal around 2500-3300 cm-1 due to the O-H stretch, but it is typically much broader than what you would see for a terminal alkyne.

3. Alcohols also have a broad O-H stretch around 3200-3600 cm-1, but again, it is typically much broader than what you would see for a terminal alkyne.

4. Primary amines have a N-H stretch that appears as a medium to weak signal around 3300-3500 cm-1. However, primary amines usually show two signals in this region due to the two N-H bonds, which is not the case here.

So, based on the information given, the signal at 3300 cm-1 is most likely due to a terminal alkyne.

Question

The signal at 3300 cm-1 in an IR spectrum most likely corresponds to a terminal alkyne.

Here's why:

1. Terminal alkynes have a C-H stretch that appears in the 3300 cm-1 region of an IR spectrum.

2. Carboxylic acids usually have a broad signal around 2500-3300 cm-1 due to the O-H stretch, but it is typically much broader than what you would see for a terminal alkyne.

3. Alcohols also have a broad O-H stretch around 3200-3600 cm-1, but again, it is typically much broader than what you would see for a terminal alkyne.

4. Primary amines have a N-H stretch that appears as a medium to weak signal around 3300-3500 cm-1. However, primary amines usually show two signals in this region due to the two N-H bonds, which is not the case here.

So, based on the information given, the signal at 3300 cm-1 is most likely due to a terminal alkyne.

Knowee AI · Accepted Answer

The signal at 3300 cm-1 in an IR spectrum most likely corresponds to a terminal alkyne.

Here's why:

1. Terminal alkynes have a C-H stretch that appears in the 3300 cm-1 region of an IR spectrum.

2. Carboxylic acids usually have a broad signal around 2500-3300 cm-1 due to the O-H stretch, but it is typically much broader than what you would see for a terminal alkyne.

3. Alcohols also have a broad O-H stretch around 3200-3600 cm-1, but again, it is typically much broader than what you would see for a terminal alkyne.

4. Primary amines have a N-H stretch that appears as a medium to weak signal around 3300-3500 cm-1. However, primary amines usually show two signals in this region due to the two N-H bonds, which is not the case here.

So, based on the information given, the signal at 3300 cm-1 is most likely due to a terminal alkyne.

In an IR spectrum, a narrow signal at 3300 cm–1 most likely corresponds to which functional group.Select answer from the options belowTerminal alkyneCarboxylic acid Alcohol Primary amine

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