Homework Help is Here – Start Your Trial Now!
Science
Chemistry
If the molecule giving the ¹H NMR spectrum shown below has a total of 10 protons, how many protons are represented by peak I?

If the molecule giving the ¹H NMR spectrum shown below has a total of 10 protons, how many protons are represented by peak I?

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
**NMR Spectrum Analysis Example** **Question:** If the molecule giving the \( ^1\text{H} \) NMR spectrum shown below has a total of 10 protons, how many protons are represented by peak I? **NMR Spectrum Details:** - **Graph Overview:** The spectrum includes chemical shifts along the x-axis (in ppm, parts per million) and intensity along the y-axis, which reflects the abundance of signals. - **Peak Identification:** - **Peak I:** Located between 2 and 3 ppm, which is typically indicative of protons next to electronegative atoms or in certain chemical environments. - **Peak II:** Located slightly above 1 ppm, potentially representing protons in a different chemical environment, such as aliphatic groups. - **Integration Curves:** The curved lines above each peak are integration lines that provide a proportional representation of the number of protons corresponding to each peak. In this specific spectrum, observe that the integration line above Peak I indicates a smaller integration compared to Peak II. This suggests that fewer protons are contributing to Peak I compared to Peak II. **Solution Explanation:** To solve the problem, analyze the integration ratio represented by the peak areas: 1. **Total Protons in the Molecule:** 10 protons. 2. **Protons Corresponding to Peak I:** Evaluate the integration. - If Peak I is shown to be approximately half the area or height of Peak II, it may represent fewer protons. Assume a hypothetical ratio such as 3 protons for Peak I and 7 for Peak II based on visual assessment. Hence, the number of protons represented by Peak I is likely 3. Such analysis requires precise integration values often provided alongside NMR spectra in research but can be estimated using visual inspection in educational contexts.
Transcribed Image Text:**NMR Spectrum Analysis Example** **Question:** If the molecule giving the \( ^1\text{H} \) NMR spectrum shown below has a total of 10 protons, how many protons are represented by peak I? **NMR Spectrum Details:** - **Graph Overview:** The spectrum includes chemical shifts along the x-axis (in ppm, parts per million) and intensity along the y-axis, which reflects the abundance of signals. - **Peak Identification:** - **Peak I:** Located between 2 and 3 ppm, which is typically indicative of protons next to electronegative atoms or in certain chemical environments. - **Peak II:** Located slightly above 1 ppm, potentially representing protons in a different chemical environment, such as aliphatic groups. - **Integration Curves:** The curved lines above each peak are integration lines that provide a proportional representation of the number of protons corresponding to each peak. In this specific spectrum, observe that the integration line above Peak I indicates a smaller integration compared to Peak II. This suggests that fewer protons are contributing to Peak I compared to Peak II. **Solution Explanation:** To solve the problem, analyze the integration ratio represented by the peak areas: 1. **Total Protons in the Molecule:** 10 protons. 2. **Protons Corresponding to Peak I:** Evaluate the integration. - If Peak I is shown to be approximately half the area or height of Peak II, it may represent fewer protons. Assume a hypothetical ratio such as 3 protons for Peak I and 7 for Peak II based on visual assessment. Hence, the number of protons represented by Peak I is likely 3. Such analysis requires precise integration values often provided alongside NMR spectra in research but can be estimated using visual inspection in educational contexts.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
NMR Spectroscopy of Organic Molecules
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.
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