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C9H1,02 b 54 Units 23 Units 33 Units 9 8 7 6. 1 4 PPM 2. 3.

C9H1,02 b 54 Units 23 Units 33 Units 9 8 7 6. 1 4 PPM 2. 3.

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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The height or area under each HNMR peak is proportional to the relative number of protons associated with a given sight. Use the integrals below to determine the number of protons associated with signals a-c
Below is the transcribed content and detailed explanation of the graph from the provided image, suitable for an educational website. --- ### Nuclear Magnetic Resonance (NMR) Spectrum Analysis #### Chemical Analysis of C₉H₁₀O₂ The following NMR spectrum represents the chemical shifts of a species with the molecular formula C₉H₁₀O₂. The spectrum is detailed along a PPM (parts per million) scale, ranging from 0 to 9 PPM. The data includes three primary peaks labeled 'a,' 'b,' and 'c,' along with their corresponding areas in units. ### Spectrum Breakdown ##### Peaks and Areas: 1. **Peak 'a'** - **PPM Range:** Approximately 2 PPM - **Area:** 33 Units 2. **Peak 'b'** - **PPM Range:** Approximately 5 PPM - **Area:** 23 Units 3. **Peak 'c'** - **PPM Range:** Approximately 7 PPM - **Area:** 54 Units ### Graph Description: - **X-axis (PPM):** This axis represents the chemical shift in parts per million (PPM), a standard unit for NMR spectra. - **Y-axis:** Intensity of the peaks although not specifically labeled, is understood to represent the relative number of protons corresponding to each chemical environment. - **Molecular Formula:** The molecular formula C₉H₁₀O₂ is provided at the top left of the spectrum, indicating the composition of the analyzed compound. - **Peak Identification:** Each peak corresponds to a distinct chemical environment within the molecule: - Peak 'c' at ~7 PPM (54 units) often correlates with protons in an aromatic ring. - Peak 'b' at ~5 PPM (23 units) might suggest protons in a vinyl or aldehyde group environment. - Peak 'a' at ~2 PPM (33 units) typically suggests protons in a methyl group adjacent to a carbonyl group. ### Educational Notes: - The areas under the peaks (integrals) are directly proportional to the number of hydrogen atoms represented by that peak. - The chemical shifts can indicate the types of hydrogen atoms present in different chemical environments. - Understanding and interpreting NMR spectra are crucial for chemists in identifying the structure of organic compounds. ### Example
Transcribed Image Text:Below is the transcribed content and detailed explanation of the graph from the provided image, suitable for an educational website. --- ### Nuclear Magnetic Resonance (NMR) Spectrum Analysis #### Chemical Analysis of C₉H₁₀O₂ The following NMR spectrum represents the chemical shifts of a species with the molecular formula C₉H₁₀O₂. The spectrum is detailed along a PPM (parts per million) scale, ranging from 0 to 9 PPM. The data includes three primary peaks labeled 'a,' 'b,' and 'c,' along with their corresponding areas in units. ### Spectrum Breakdown ##### Peaks and Areas: 1. **Peak 'a'** - **PPM Range:** Approximately 2 PPM - **Area:** 33 Units 2. **Peak 'b'** - **PPM Range:** Approximately 5 PPM - **Area:** 23 Units 3. **Peak 'c'** - **PPM Range:** Approximately 7 PPM - **Area:** 54 Units ### Graph Description: - **X-axis (PPM):** This axis represents the chemical shift in parts per million (PPM), a standard unit for NMR spectra. - **Y-axis:** Intensity of the peaks although not specifically labeled, is understood to represent the relative number of protons corresponding to each chemical environment. - **Molecular Formula:** The molecular formula C₉H₁₀O₂ is provided at the top left of the spectrum, indicating the composition of the analyzed compound. - **Peak Identification:** Each peak corresponds to a distinct chemical environment within the molecule: - Peak 'c' at ~7 PPM (54 units) often correlates with protons in an aromatic ring. - Peak 'b' at ~5 PPM (23 units) might suggest protons in a vinyl or aldehyde group environment. - Peak 'a' at ~2 PPM (33 units) typically suggests protons in a methyl group adjacent to a carbonyl group. ### Educational Notes: - The areas under the peaks (integrals) are directly proportional to the number of hydrogen atoms represented by that peak. - The chemical shifts can indicate the types of hydrogen atoms present in different chemical environments. - Understanding and interpreting NMR spectra are crucial for chemists in identifying the structure of organic compounds. ### Example
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