AVENUMBER [cm-1] C4H&O2 20 4000 3500 3000 2500 2000 1500 1000 500 WAVENUMBER [cm-1] 001 08 09 TRANSMITTANCE [%]

Chemistry
10th Edition
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
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1) circle bands of interest draw corresponding bonds next to bands 

2) draw possible structure 

This image shows an infrared (IR) spectroscopy graph for a compound with the molecular formula C₄H₈O₂. 

### Graph Details:

- **X-Axis:** Wavenumber (cm⁻¹), which ranges from 4000 to 500. 
- **Y-Axis:** Transmittance (%), which ranges from 0 to 100.

### Analysis:

- **Peak Observations:** 
  - Broad peaks are visible throughout the range, indicating different vibrational frequencies corresponding to the bonds and functional groups in the compound.
  - A significant dip in transmittance around 3000 cm⁻¹ suggests the presence of C-H stretching vibrations.
  - The region around 1700 cm⁻¹ might indicate a C=O (carbonyl) group, common in compounds with ester or ketone functionalities.

### Educational Context:

This IR spectrum can be utilized to teach students about the identification of functional groups in organic compounds through infrared spectroscopy. Students can learn to correlate specific wavenumber ranges to various types of chemical bonds and molecular structures.
Transcribed Image Text:This image shows an infrared (IR) spectroscopy graph for a compound with the molecular formula C₄H₈O₂. ### Graph Details: - **X-Axis:** Wavenumber (cm⁻¹), which ranges from 4000 to 500. - **Y-Axis:** Transmittance (%), which ranges from 0 to 100. ### Analysis: - **Peak Observations:** - Broad peaks are visible throughout the range, indicating different vibrational frequencies corresponding to the bonds and functional groups in the compound. - A significant dip in transmittance around 3000 cm⁻¹ suggests the presence of C-H stretching vibrations. - The region around 1700 cm⁻¹ might indicate a C=O (carbonyl) group, common in compounds with ester or ketone functionalities. ### Educational Context: This IR spectrum can be utilized to teach students about the identification of functional groups in organic compounds through infrared spectroscopy. Students can learn to correlate specific wavenumber ranges to various types of chemical bonds and molecular structures.
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