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H₂C I || CH3 CH III 2.0 CH3 IV ppm 1.0 1: 0.91 ppm II: 3.29 ppm III: 3.23 ppm IV: 1.52 ppm C) 1: 3.23 ppm II: 3.29 ppm III: 0.91 ppm IV: 1.52 ppm D) 1: 3.23 ppm II: 3.29 ppm III: 1.52 ppm IV: 0.91 ppm +

H₂C I || CH3 CH III 2.0 CH3 IV ppm 1.0 1: 0.91 ppm II: 3.29 ppm III: 3.23 ppm IV: 1.52 ppm C) 1: 3.23 ppm II: 3.29 ppm III: 0.91 ppm IV: 1.52 ppm D) 1: 3.23 ppm II: 3.29 ppm III: 1.52 ppm IV: 0.91 ppm +

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...
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**Match the Peaks in the Spectrum with Hydrogens on the Structure** Below is an NMR spectrum of a compound, with a chemical structure provided. The task is to associate peaks in the spectrum with the hydrogen atoms in the structure. **Compound Structure:** The chemical structure displayed includes four labeled hydrogen groups: - I: \( \text{CH}_3 \) - II: \( \text{CH}_2 \) - III: \( \text{CH} \) - IV: \( \text{CH}_3 \) **NMR Spectrum:** The horizontal axis represents the chemical shift in parts per million (ppm). The spectrum shows distinct peaks: - A peak around 0.9 ppm - A peak around 1.5 ppm - A peak around 3.2 ppm - A peak around 3.3 ppm **Matching Options:** You have three sets of options to match the peaks to the hydrogen groups: A) - I: 0.91 ppm - II: 3.29 ppm - III: 1.52 ppm - IV: 3.23 ppm B) - I: 0.91 ppm - II: 3.29 ppm - III: 3.23 ppm - IV: 1.52 ppm C) - I: 3.23 ppm - II: 3.29 ppm - III: 1.52 ppm - IV: 0.91 ppm The goal is to determine which option correctly correlates the NMR spectrum peaks to the hydrogen atoms on the compound's structure.
Transcribed Image Text:**Match the Peaks in the Spectrum with Hydrogens on the Structure** Below is an NMR spectrum of a compound, with a chemical structure provided. The task is to associate peaks in the spectrum with the hydrogen atoms in the structure. **Compound Structure:** The chemical structure displayed includes four labeled hydrogen groups: - I: \( \text{CH}_3 \) - II: \( \text{CH}_2 \) - III: \( \text{CH} \) - IV: \( \text{CH}_3 \) **NMR Spectrum:** The horizontal axis represents the chemical shift in parts per million (ppm). The spectrum shows distinct peaks: - A peak around 0.9 ppm - A peak around 1.5 ppm - A peak around 3.2 ppm - A peak around 3.3 ppm **Matching Options:** You have three sets of options to match the peaks to the hydrogen groups: A) - I: 0.91 ppm - II: 3.29 ppm - III: 1.52 ppm - IV: 3.23 ppm B) - I: 0.91 ppm - II: 3.29 ppm - III: 3.23 ppm - IV: 1.52 ppm C) - I: 3.23 ppm - II: 3.29 ppm - III: 1.52 ppm - IV: 0.91 ppm The goal is to determine which option correctly correlates the NMR spectrum peaks to the hydrogen atoms on the compound's structure.
### NMR Spectrum Analysis #### Graph Description The image features an NMR spectrum graph with a chemical structure. The chemical structure includes labeled hydrogen environments: I, II, III, and IV. The x-axis of the graph is marked with chemical shifts in parts per million (ppm) ranging from 0.0 to above 4.0 ppm. #### Chemical Structure The molecular structure is labeled: - **I**: CH₃ group on the far left - **II**: CH₂ group - **III**: CH group - **IV**: Remaining CH₃ group on the far right #### Peak Assignments Adjacent to the spectrum are options for assigning chemical shifts to the labeled hydrogen environments (I, II, III, IV): - **Option A:** - I: 0.91 ppm - II: 3.29 ppm - III: 3.23 ppm - IV: 1.52 ppm - **Option B:** - I: 0.91 ppm - II: 3.29 ppm - III: 3.23 ppm - IV: 1.52 ppm - **Option C:** - I: 3.23 ppm - II: 3.29 ppm - III: 0.91 ppm - IV: 1.52 ppm - **Option D:** - I: 3.23 ppm - II: 3.29 ppm - III: 1.52 ppm - IV: 0.91 ppm These options correspond to the potential chemical shift values observed for the different hydrogen environments within the molecule. Each option proposes a different set of assignments for these shifts, reflecting possible interpretations of the spectral data.
Transcribed Image Text:### NMR Spectrum Analysis #### Graph Description The image features an NMR spectrum graph with a chemical structure. The chemical structure includes labeled hydrogen environments: I, II, III, and IV. The x-axis of the graph is marked with chemical shifts in parts per million (ppm) ranging from 0.0 to above 4.0 ppm. #### Chemical Structure The molecular structure is labeled: - **I**: CH₃ group on the far left - **II**: CH₂ group - **III**: CH group - **IV**: Remaining CH₃ group on the far right #### Peak Assignments Adjacent to the spectrum are options for assigning chemical shifts to the labeled hydrogen environments (I, II, III, IV): - **Option A:** - I: 0.91 ppm - II: 3.29 ppm - III: 3.23 ppm - IV: 1.52 ppm - **Option B:** - I: 0.91 ppm - II: 3.29 ppm - III: 3.23 ppm - IV: 1.52 ppm - **Option C:** - I: 3.23 ppm - II: 3.29 ppm - III: 0.91 ppm - IV: 1.52 ppm - **Option D:** - I: 3.23 ppm - II: 3.29 ppm - III: 1.52 ppm - IV: 0.91 ppm These options correspond to the potential chemical shift values observed for the different hydrogen environments within the molecule. Each option proposes a different set of assignments for these shifts, reflecting possible interpretations of the spectral data.
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