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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EXPLAIN INFRARED UNKNOWN. .

Transcribed Image Text:**Infrared Spectrum Analysis**
This image depicts an infrared (IR) spectrum graph. The vertical axis represents transmittance, ranging from 0 to 1, while the horizontal axis shows the wavenumber, measured in cm⁻¹, ranging from approximately 4000 to 600.
**Graph Details:**
- **Transmittance:** Indicates how much of the infrared light passes through the sample. A value close to 1 means most light is transmitted, and lower values indicate absorption at specific frequencies.
- **Wavenumber:** Reflects the frequency of the infrared light, with higher wavenumbers corresponding to higher energy vibrations within the molecule.
The graph shows various peaks indicating different vibrational modes of a molecule. The major absorptions occur in several regions, such as around 3000 cm⁻¹, 1600 cm⁻¹, and below 1000 cm⁻¹, which are characteristic of different functional groups.
**Source:**
NIST Chemistry WebBook (https://webbook.nist.gov/chemistry)
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