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CH CH3 CH -C-CH 3.10 mm a 6.17 mm total 1.48 mm 1.09 mm 0.50 mm 9 8. 7 3 1 8 (ppm) 8. In the above spectrum, how many non-equivalent protons are present? 9. Which proton(s) has the highest chemical shift? 10. Which proton(s) has the lowest chemical shift? 11. Calculate the ratio between Ha:Hd 12. Calculate the ratio between Hp:Hd 13. Calculate the ratio between Hc:Hd 14. Why are all the numbers of protons compared only to Ha? That is, why wouldn't it make sense to compare all the numbers of protons to Ha, or Hp or H.?

CH CH3 CH -C-CH 3.10 mm a 6.17 mm total 1.48 mm 1.09 mm 0.50 mm 9 8. 7 3 1 8 (ppm) 8. In the above spectrum, how many non-equivalent protons are present? 9. Which proton(s) has the highest chemical shift? 10. Which proton(s) has the lowest chemical shift? 11. Calculate the ratio between Ha:Hd 12. Calculate the ratio between Hp:Hd 13. Calculate the ratio between Hc:Hd 14. Why are all the numbers of protons compared only to Ha? That is, why wouldn't it make sense to compare all the numbers of protons to Ha, or Hp or H.?

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**NMR Spectrum and Proton Analysis** The image displays an NMR spectrum with labeled chemical shifts for a specific molecule. ### Molecular Structure In the molecular structure provided, different types of protons are assigned labels: - \( \text{H}_a \) - \( \text{H}_b \) - \( \text{H}_c \) - \( \text{H}_d \) ### NMR Spectrum The graph represents the NMR spectrum: - The x-axis is labeled with chemical shift (\(\delta\) ppm). - Peaks representing the protons are shown with their respective chemical shifts. **Measurements:** - Total range for \( \text{H}_a \) is indicated as 6.17 mm. - \( \text{H}_b \) measures 3.10 mm. - \( \text{H}_c \) measures 1.48 mm. - \( \text{H}_d \) measures 0.50 mm. ### Questions and Analysis 8. **In the above spectrum, how many non-equivalent protons are present?** 9. **Which proton(s) has the highest chemical shift?** 10. **Which proton(s) has the lowest chemical shift?** 11. **Calculate the ratio between \( \text{H}_a : \text{H}_d \).** 12. **Calculate the ratio between \( \text{H}_b : \text{H}_d \).** 13. **Calculate the ratio between \( \text{H}_c : \text{H}_d \).** 14. **Why are all the numbers of protons compared only to \( \text{H}_d \)? That is, why wouldn’t it make sense to compare all the numbers of protons to \( \text{H}_a \), or \( \text{H}_b \), or \( \text{H}_c \)?** ### Explanation of the Graph The graph visually depicts the relationship between different types of protons based on their chemical environment. The chemical shift provides insights into the proximity of electronegative atoms or other functional groups affecting the protons. Comparing the ratios of different protons helps in understanding their relative abundances and interactions within the molecule.
Transcribed Image Text:**NMR Spectrum and Proton Analysis** The image displays an NMR spectrum with labeled chemical shifts for a specific molecule. ### Molecular Structure In the molecular structure provided, different types of protons are assigned labels: - \( \text{H}_a \) - \( \text{H}_b \) - \( \text{H}_c \) - \( \text{H}_d \) ### NMR Spectrum The graph represents the NMR spectrum: - The x-axis is labeled with chemical shift (\(\delta\) ppm). - Peaks representing the protons are shown with their respective chemical shifts. **Measurements:** - Total range for \( \text{H}_a \) is indicated as 6.17 mm. - \( \text{H}_b \) measures 3.10 mm. - \( \text{H}_c \) measures 1.48 mm. - \( \text{H}_d \) measures 0.50 mm. ### Questions and Analysis 8. **In the above spectrum, how many non-equivalent protons are present?** 9. **Which proton(s) has the highest chemical shift?** 10. **Which proton(s) has the lowest chemical shift?** 11. **Calculate the ratio between \( \text{H}_a : \text{H}_d \).** 12. **Calculate the ratio between \( \text{H}_b : \text{H}_d \).** 13. **Calculate the ratio between \( \text{H}_c : \text{H}_d \).** 14. **Why are all the numbers of protons compared only to \( \text{H}_d \)? That is, why wouldn’t it make sense to compare all the numbers of protons to \( \text{H}_a \), or \( \text{H}_b \), or \( \text{H}_c \)?** ### Explanation of the Graph The graph visually depicts the relationship between different types of protons based on their chemical environment. The chemical shift provides insights into the proximity of electronegative atoms or other functional groups affecting the protons. Comparing the ratios of different protons helps in understanding their relative abundances and interactions within the molecule.
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