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Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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I want the one on the down right one to be answered thank you. Was confused do we have a CHO around 2800cm-1 

# Infrared Spectra Analysis of Isomers of C₄H₈O

## Overview
Below are the infrared spectra for four isomers of C₄H₈O. Each spectrum features characteristic peaks that help in identifying functional groups present in the compounds. The task is to propose a structure for each isomer based on their IR spectra.

## Infrared Spectra Descriptions

### Spectrum 1
- **Wavenumber Range:** 4000 - 500 cm⁻¹
- **Key Peaks:**
  - ~2900 cm⁻¹: C-H stretching
  - ~1720 cm⁻¹: C=O stretching, indicative of a carbonyl group
  - ~2700 cm⁻¹: Aldehyde C-H bond

### Spectrum 2
- **Wavenumber Range:** 4000 - 500 cm⁻¹
- **Key Peaks:**
  - Broad peak at ~3300 cm⁻¹: O-H stretch, indicative of alcohol
  - ~2900 cm⁻¹: C-H stretching
  - ~1100 cm⁻¹: C-O stretching

### Spectrum 3
- **Wavenumber Range:** 4000 - 500 cm⁻¹
- **Key Peaks:**
  - ~2250 cm⁻¹: C≡C stretch, indicating a triple bond
  - Broad peak at ~3300 cm⁻¹: Possible O-H stretch

### Spectrum 4
- **Wavenumber Range:** 4000 - 500 cm⁻¹
- **Key Peaks:**
  - ~1640 cm⁻¹: C=C stretch, suggesting an alkene
  - ~2900 cm⁻¹: C-H stretching

## Proposed Structures
- **First Spectrum**: Suggests an aldehyde due to C=O and aldehyde C-H peaks.
- **Second Spectrum**: Indicates an alcohol due to the broad O-H stretch.
- **Third Spectrum**: Points to a terminal alkyne or alcohol with triple bond C≡C.
- **Fourth Spectrum**: Consistent with an alkene due to the C=C stretch.

Each spectrum analysis focuses on functional group identification to aid in determining the correct isomeric structure of C₄H₈O.
Transcribed Image Text:# Infrared Spectra Analysis of Isomers of C₄H₈O ## Overview Below are the infrared spectra for four isomers of C₄H₈O. Each spectrum features characteristic peaks that help in identifying functional groups present in the compounds. The task is to propose a structure for each isomer based on their IR spectra. ## Infrared Spectra Descriptions ### Spectrum 1 - **Wavenumber Range:** 4000 - 500 cm⁻¹ - **Key Peaks:** - ~2900 cm⁻¹: C-H stretching - ~1720 cm⁻¹: C=O stretching, indicative of a carbonyl group - ~2700 cm⁻¹: Aldehyde C-H bond ### Spectrum 2 - **Wavenumber Range:** 4000 - 500 cm⁻¹ - **Key Peaks:** - Broad peak at ~3300 cm⁻¹: O-H stretch, indicative of alcohol - ~2900 cm⁻¹: C-H stretching - ~1100 cm⁻¹: C-O stretching ### Spectrum 3 - **Wavenumber Range:** 4000 - 500 cm⁻¹ - **Key Peaks:** - ~2250 cm⁻¹: C≡C stretch, indicating a triple bond - Broad peak at ~3300 cm⁻¹: Possible O-H stretch ### Spectrum 4 - **Wavenumber Range:** 4000 - 500 cm⁻¹ - **Key Peaks:** - ~1640 cm⁻¹: C=C stretch, suggesting an alkene - ~2900 cm⁻¹: C-H stretching ## Proposed Structures - **First Spectrum**: Suggests an aldehyde due to C=O and aldehyde C-H peaks. - **Second Spectrum**: Indicates an alcohol due to the broad O-H stretch. - **Third Spectrum**: Points to a terminal alkyne or alcohol with triple bond C≡C. - **Fourth Spectrum**: Consistent with an alkene due to the C=C stretch. Each spectrum analysis focuses on functional group identification to aid in determining the correct isomeric structure of C₄H₈O.
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