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2. Annotate the following spectrum by highlighting/circling at least two important signals that are present structure of the compound that most likely produces this spectrum APRIL 1900 1000 A C E OH Circle the NH D F LL

2. Annotate the following spectrum by highlighting/circling at least two important signals that are present structure of the compound that most likely produces this spectrum APRIL 1900 1000 A C E OH Circle the NH D F LL

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 image shows an infrared (IR) spectrum and a set of six chemical structures labeled A through F. The task is to annotate the spectrum by highlighting or circling at least two important signals present, and to circle the structure that most likely produces this spectrum. ### IR Spectrum Analysis: - The spectrum displays a plot of percent transmittance versus wavenumber (cm⁻¹). - Key features to look for in an IR spectrum include sharp or broad peaks at specific wavenumbers that correspond to different functional groups in a compound. - In this spectrum, notable peaks appear around the following regions: - Near 3300 cm⁻¹, which could indicate the presence of O-H or N-H bonds. - Around 1700 cm⁻¹, likely indicating a carbonyl (C=O) stretch. ### Chemical Structures: - **A:** Contains an alcohol group (O-H) and a carbonyl group (C=O). - **B:** Contains an amine group (N-H) within a cyclic compound. - **C:** Contains a carbonyl group with an adjacent alkyne. - **D:** Contains a nitrile group (C≡N). - **E:** Contains a carbonyl group with an adjacent ester linkage. - **F:** Contains a carbonyl group within a cyclic structure. ### Conclusion: - Given the presence of peaks near 3300 and 1700 cm⁻¹, structure **A** is most likely to produce this spectrum as it contains both an alcohol and a carbonyl group, corresponding to these common IR peaks.
Transcribed Image Text:The image shows an infrared (IR) spectrum and a set of six chemical structures labeled A through F. The task is to annotate the spectrum by highlighting or circling at least two important signals present, and to circle the structure that most likely produces this spectrum. ### IR Spectrum Analysis: - The spectrum displays a plot of percent transmittance versus wavenumber (cm⁻¹). - Key features to look for in an IR spectrum include sharp or broad peaks at specific wavenumbers that correspond to different functional groups in a compound. - In this spectrum, notable peaks appear around the following regions: - Near 3300 cm⁻¹, which could indicate the presence of O-H or N-H bonds. - Around 1700 cm⁻¹, likely indicating a carbonyl (C=O) stretch. ### Chemical Structures: - **A:** Contains an alcohol group (O-H) and a carbonyl group (C=O). - **B:** Contains an amine group (N-H) within a cyclic compound. - **C:** Contains a carbonyl group with an adjacent alkyne. - **D:** Contains a nitrile group (C≡N). - **E:** Contains a carbonyl group with an adjacent ester linkage. - **F:** Contains a carbonyl group within a cyclic structure. ### Conclusion: - Given the presence of peaks near 3300 and 1700 cm⁻¹, structure **A** is most likely to produce this spectrum as it contains both an alcohol and a carbonyl group, corresponding to these common IR peaks.
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