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abundance 0 1.0 2.0 3.0 8.0 2.00 1:00 2.00 7.0 aromatic. X: parts per Million: Proton 6.0 5.0 4.0 3.0 3.07 (sin 2.599

abundance 0 1.0 2.0 3.0 8.0 2.00 1:00 2.00 7.0 aromatic. X: parts per Million: Proton 6.0 5.0 4.0 3.0 3.07 (sin 2.599

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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Please look at the Proton NMR spectrum and identify the proposed molecular structure. 

This image appears to show an NMR (Nuclear Magnetic Resonance) spectrum, which is commonly used in chemistry for determining the structure of organic compounds. ### Description of the Spectrum: - **Horizontal Axis (X-axis):** - Represents the chemical shift, typically measured in parts per million (ppm). In this spectrum, the scale ranges from approximately 0 to beyond 3.0 ppm. - Labels at the top of the spectrum indicate specific shift points: 1.0, 2.0, 3.0, etc. - **Vertical Axis (Y-axis):** - Represents the abundance or intensity of signal peaks. ### Peaks: - Several peaks are observed: - Prominent peaks at approximately 2.00 ppm. - Another notable peak appears at 1.00 ppm. - Smaller peaks or baseline noise might be present, yet they are not distinctly labeled. ### Annotations: - On the left side, there is a list possibly referring to X-values or peak labels: - Values like 7.959, 7.941, 7.574, 7.555, 7.537, 7.472, 7.453, 7.434. - Suggested as parts per million for the different protons or chemical environments. - The peak at about 3.07 ppm is labeled as "(singlet)", indicating a feature of the spectrum where protons are equivalent and exhibit no coupling with adjacent protons. ### Graph Explanation: - The NMR spectrum is analyzed by identifying the number, position, and shape of the peaks. - Each peak represents a different set of equivalent hydrogen atoms within the molecule. - Singlet, as noted, indicates a group of protons that does not split into multiple peaks, meaning they are not coupled with nearby protons. This information would be used to help students or researchers identify compound structures by comparing the recorded shifts and patterns against known values or expected molecular structures.
Transcribed Image Text:This image appears to show an NMR (Nuclear Magnetic Resonance) spectrum, which is commonly used in chemistry for determining the structure of organic compounds. ### Description of the Spectrum: - **Horizontal Axis (X-axis):** - Represents the chemical shift, typically measured in parts per million (ppm). In this spectrum, the scale ranges from approximately 0 to beyond 3.0 ppm. - Labels at the top of the spectrum indicate specific shift points: 1.0, 2.0, 3.0, etc. - **Vertical Axis (Y-axis):** - Represents the abundance or intensity of signal peaks. ### Peaks: - Several peaks are observed: - Prominent peaks at approximately 2.00 ppm. - Another notable peak appears at 1.00 ppm. - Smaller peaks or baseline noise might be present, yet they are not distinctly labeled. ### Annotations: - On the left side, there is a list possibly referring to X-values or peak labels: - Values like 7.959, 7.941, 7.574, 7.555, 7.537, 7.472, 7.453, 7.434. - Suggested as parts per million for the different protons or chemical environments. - The peak at about 3.07 ppm is labeled as "(singlet)", indicating a feature of the spectrum where protons are equivalent and exhibit no coupling with adjacent protons. ### Graph Explanation: - The NMR spectrum is analyzed by identifying the number, position, and shape of the peaks. - Each peak represents a different set of equivalent hydrogen atoms within the molecule. - Singlet, as noted, indicates a group of protons that does not split into multiple peaks, meaning they are not coupled with nearby protons. This information would be used to help students or researchers identify compound structures by comparing the recorded shifts and patterns against known values or expected molecular structures.
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