75- 70- 65 60 55 40 35 30 20- 15 10- 5- 0- 4000 3500 3000 2500 2000 1500 1000 500 Wavenumbers (cm-1) %Transmittance 25 3499.39 3066.39 2956.18 2878.84 1736.61 1658.23 1457.34 1388.33 1362.38 1242.49 1187.86, 61162.27. 36.37- 09-1870.3891.63 1109. 1054.86, 1021.91 876.67 838.43 634.269.84 403.84

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...
icon
Related questions
Question

Analysis : List the relevant IR peaks in the table below

Peak Position cm-1 Bond Type   Functional Group
     
     
     
     

 

### Infrared Spectroscopy Analysis

#### Graph Description

The graph presented is an infrared (IR) spectrum displaying the relationship between transmittance (%) and wavenumbers (cm⁻¹). This type of spectrum is commonly used in chemistry to identify organic compounds by analyzing the molecular vibrations as they interact with infrared light.

#### X-Axis: Wavenumbers (cm⁻¹)
- The horizontal axis represents wavenumbers ranging from 4000 cm⁻¹ to 400 cm⁻¹. Wavenumbers are inversely proportional to wavelength and are used to denote the frequency of light.

#### Y-Axis: % Transmittance
- The vertical axis shows the percentage of transmittance, indicating how much infrared light passes through the sample. A lower percentage means higher absorption by the sample at specific wavenumbers.

#### Key Peaks and Identified Wavenumbers:
- **3499.39 cm⁻¹**: Characteristic of O-H stretching, often associated with alcohols and phenols.
- **3066.39 cm⁻¹**: Indicates C-H stretching, typical in alkenes.
- **2956.18 cm⁻¹ & 2878.84 cm⁻¹**: Correspond to C-H stretching vibrations in alkanes.
- **1736.61 cm⁻¹**: Associated with the C=O stretching of carbonyl groups found in ketones, aldehydes, and esters.
- **1658.23 cm⁻¹**: Can indicate C=C stretching, seen in alkenes.
- **1457.34 cm⁻¹, 1388.33 cm⁻¹, and 1362.38 cm⁻¹**: Represent bending vibrations.
- **1224.49 cm⁻¹**: May be related to C-O stretching in ethers or esters.
- **Various peaks between 1109.89 cm⁻¹ and 403.84 cm⁻¹**: Correspond to fingerprint regions that are specific to individual compounds.

This spectral data can be used to help identify functional groups within a sample and provides insight into the molecular structure. The fingerprint region, in particular, offers detailed information useful for distinguishing between similar compounds.
Transcribed Image Text:### Infrared Spectroscopy Analysis #### Graph Description The graph presented is an infrared (IR) spectrum displaying the relationship between transmittance (%) and wavenumbers (cm⁻¹). This type of spectrum is commonly used in chemistry to identify organic compounds by analyzing the molecular vibrations as they interact with infrared light. #### X-Axis: Wavenumbers (cm⁻¹) - The horizontal axis represents wavenumbers ranging from 4000 cm⁻¹ to 400 cm⁻¹. Wavenumbers are inversely proportional to wavelength and are used to denote the frequency of light. #### Y-Axis: % Transmittance - The vertical axis shows the percentage of transmittance, indicating how much infrared light passes through the sample. A lower percentage means higher absorption by the sample at specific wavenumbers. #### Key Peaks and Identified Wavenumbers: - **3499.39 cm⁻¹**: Characteristic of O-H stretching, often associated with alcohols and phenols. - **3066.39 cm⁻¹**: Indicates C-H stretching, typical in alkenes. - **2956.18 cm⁻¹ & 2878.84 cm⁻¹**: Correspond to C-H stretching vibrations in alkanes. - **1736.61 cm⁻¹**: Associated with the C=O stretching of carbonyl groups found in ketones, aldehydes, and esters. - **1658.23 cm⁻¹**: Can indicate C=C stretching, seen in alkenes. - **1457.34 cm⁻¹, 1388.33 cm⁻¹, and 1362.38 cm⁻¹**: Represent bending vibrations. - **1224.49 cm⁻¹**: May be related to C-O stretching in ethers or esters. - **Various peaks between 1109.89 cm⁻¹ and 403.84 cm⁻¹**: Correspond to fingerprint regions that are specific to individual compounds. This spectral data can be used to help identify functional groups within a sample and provides insight into the molecular structure. The fingerprint region, in particular, offers detailed information useful for distinguishing between similar compounds.
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Vibrational Spectra
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY