Homework Help is Here – Start Your Trial Now!
Science
Chemistry
1) How could the pair of structures shown be distinguished using IR spectroscopy? List the diagnostic peaks in wave numbers that would be present or absent for each pair. (a) (b) H N HO NH₂ H Hr

1) How could the pair of structures shown be distinguished using IR spectroscopy? List the diagnostic peaks in wave numbers that would be present or absent for each pair. (a) (b) H N HO NH₂ H Hr

Chemistry
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...
See similar textbooks
icon
Related questions
Question
**Question:** 1) How could the pair of structures shown be distinguished using IR spectroscopy? List the diagnostic peaks in wave numbers that would be present or absent for each pair. **Explanation:** **Pair (a):** - The first structure shows a cyclohexylamine compound which includes an NH stretch. The diagnostic IR peak would be around 3300-3500 cm⁻¹, indicating an N-H stretch. - The second structure is ethylamine, which also has NH stretches. The peaks would similarly appear in the 3300-3500 cm⁻¹ region but may differ slightly due to differences in molecular environment. **Pair (b):** - The first structure is a cyclohexyl acetate, which contains a C=O ester functional group. This would produce a strong IR peak around 1735-1750 cm⁻¹ for the carbonyl group. - The second structure is propanal, an aldehyde, which will also display a C=O stretch, but its peak will typically appear around 1720-1740 cm⁻¹. Additionally, aldehydes often show a C-H stretch near 2720-2820 cm⁻¹ due to the aldehyde hydrogen. **Conclusion:** IR spectroscopy distinguishes these structures by identifying the presence or absence of specific functional groups corresponding to these wave numbers.
Transcribed Image Text:**Question:** 1) How could the pair of structures shown be distinguished using IR spectroscopy? List the diagnostic peaks in wave numbers that would be present or absent for each pair. **Explanation:** **Pair (a):** - The first structure shows a cyclohexylamine compound which includes an NH stretch. The diagnostic IR peak would be around 3300-3500 cm⁻¹, indicating an N-H stretch. - The second structure is ethylamine, which also has NH stretches. The peaks would similarly appear in the 3300-3500 cm⁻¹ region but may differ slightly due to differences in molecular environment. **Pair (b):** - The first structure is a cyclohexyl acetate, which contains a C=O ester functional group. This would produce a strong IR peak around 1735-1750 cm⁻¹ for the carbonyl group. - The second structure is propanal, an aldehyde, which will also display a C=O stretch, but its peak will typically appear around 1720-1740 cm⁻¹. Additionally, aldehydes often show a C-H stretch near 2720-2820 cm⁻¹ due to the aldehyde hydrogen. **Conclusion:** IR spectroscopy distinguishes these structures by identifying the presence or absence of specific functional groups corresponding to these wave numbers.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Mass Spectrometry
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
SEE MORE TEXTBOOKS