### Infrared Spectrum Analysis#### Spectrum DescriptionThe given infrared spectrum features several key absorption peaks:- **Peak at 3100 cm⁻¹**: This indicates the presence of C-H stretching, typically seen in aromatic compounds.- **Peak at 1700 cm⁻¹**: This is indicative of a C=O (carbonyl) group, which is common in ketones, aldehydes, and other carbonyl-containing compounds.#### QuestionWhich of the following compounds is consistent with the spectrum shown above?#### Structures of Compounds:- **A) Pentanal** - Contains an aldehyde group.- **B) Methoxybenzene** - Contains an aromatic ring and a methoxy group.- **C) Benzaldehyde** - Contains an aromatic ring with an aldehyde group.- **D) 2-Methylpropanenitrile** - Contains a nitrile group (CN).- **E) 2-Methylpropane-1-amine** - Contains an amine group (NH2).#### Options:- **A) Pentanal**- **E) 2-Methylpropane-1-amine**- **D) 2-Methylpropanenitrile**- **B) Methoxybenzene**- **C) Benzaldehyde**### AnalysisBased on the spectrum features, particularly the absorption peaks, the compound most likely to match is **C) Benzaldehyde** due to the presence of both an aromatic ring (evidenced by the C-H stretching) and a carbonyl group.

Answered: Image /qna-images/answer/956a5c31-24c5-4bd7-b4bf-bd159c3616a9.jpg

Given the following Infrared Spectrum, Transmittance 100 90 80- 70 60 50 40 304 20 10 mm 3100 H₂C. 3000 B O A) Pentanal Which of the following compounds is consistent with the spectrum shown above? CH₂ 1/CM 0 2000 1700 1000 D E с CH, or se "H H₂C H₂C CH, NH₂

Given the following Infrared Spectrum, Transmittance 100 90 80- 70 60 50 40 304 20 10 mm 3100 H₂C. 3000 B O A) Pentanal Which of the following compounds is consistent with the spectrum shown above? CH₂ 1/CM 0 2000 1700 1000 D E с CH, or se "H H₂C H₂C CH, NH₂

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

### Infrared Spectrum Analysis

#### Spectrum Description
The given infrared spectrum features several key absorption peaks:

- **Peak at 3100 cm⁻¹**: This indicates the presence of C-H stretching, typically seen in aromatic compounds.
- **Peak at 1700 cm⁻¹**: This is indicative of a C=O (carbonyl) group, which is common in ketones, aldehydes, and other carbonyl-containing compounds.

#### Question
Which of the following compounds is consistent with the spectrum shown above?

#### Structures of Compounds:
- **A) Pentanal**
- Contains an aldehyde group.
- **B) Methoxybenzene**
- Contains an aromatic ring and a methoxy group.
- **C) Benzaldehyde**
- Contains an aromatic ring with an aldehyde group.
- **D) 2-Methylpropanenitrile**
- Contains a nitrile group (CN).
- **E) 2-Methylpropane-1-amine**
- Contains an amine group (NH2).

#### Options:
- **A) Pentanal**
- **E) 2-Methylpropane-1-amine**
- **D) 2-Methylpropanenitrile**
- **B) Methoxybenzene**
- **C) Benzaldehyde**

### Analysis
Based on the spectrum features, particularly the absorption peaks, the compound most likely to match is **C) Benzaldehyde** due to the presence of both an aromatic ring (evidenced by the C-H stretching) and a carbonyl group.

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