A) amide B) amine C) carboxylic acid 2000 1000 4000 3000 1500 s00 D) alcohol Wavenumber (em) An IR spectrum of an unknown compound is shown below. Predict the principal functional group present in this compound.

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**Infrared (IR) Spectrum Analysis**

An IR spectrum of an unknown compound is shown below. Predict the principal functional group present in this compound.

**Graph Explanation:**
This is an IR spectrum graph featuring absorbance on the vertical axis and wavenumber (cm⁻¹) on the horizontal axis. The wavenumber range spans from 4000 cm⁻¹ to 500 cm⁻¹. The spectrum displays several notable peaks:

- A broad peak around 2500-3000 cm⁻¹
- Sharp peaks appearing near 1700-1750 cm⁻¹

These peaks are crucial for determining the functional groups present in the compound.

**Answer Options:**
A) Amide  
B) Amine  
C) Carboxylic acid  
D) Alcohol  

Using the given IR spectrum, identify which functional group is most likely present based on the characteristic absorption peaks.

**Hint:** Broad peaks around 2500-3000 cm⁻¹ and strong peaks near 1700-1750 cm⁻¹ are typical indicators of certain functional groups.
Transcribed Image Text:**Infrared (IR) Spectrum Analysis** An IR spectrum of an unknown compound is shown below. Predict the principal functional group present in this compound. **Graph Explanation:** This is an IR spectrum graph featuring absorbance on the vertical axis and wavenumber (cm⁻¹) on the horizontal axis. The wavenumber range spans from 4000 cm⁻¹ to 500 cm⁻¹. The spectrum displays several notable peaks: - A broad peak around 2500-3000 cm⁻¹ - Sharp peaks appearing near 1700-1750 cm⁻¹ These peaks are crucial for determining the functional groups present in the compound. **Answer Options:** A) Amide B) Amine C) Carboxylic acid D) Alcohol Using the given IR spectrum, identify which functional group is most likely present based on the characteristic absorption peaks. **Hint:** Broad peaks around 2500-3000 cm⁻¹ and strong peaks near 1700-1750 cm⁻¹ are typical indicators of certain functional groups.
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