Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question

draw fragment ion  that corresponds to the Base peak in each spectra. compound given.

The image illustrates three structural isomers and their corresponding mass spectra. Each isomer is to be matched with its mass spectrum, and the fragment ion responsible for the base peak is identified and drawn next to the corresponding spectrum. **Compounds:** - **a.** An alcohol isomer with an alkene structure. - **b.** An aldehyde isomer. - **c.** A ketone isomer. **Mass Spectra:** 1. **First Graph:** - **X-axis:** m/z (mass-to-charge ratio) - **Y-axis:** Relative intensity - Displays multiple peaks with a significant peak around m/z 57. - **Compound & Fragment:** Matches with the aldehyde (b) with the fragment drawn as shown in the compound box. 2. **Second Graph:** - **X-axis:** m/z (mass-to-charge ratio) - **Y-axis:** Relative intensity - Shows a base peak at m/z 43. - **Compound & Fragment:** Matches with the alcohol isomer (a) with the corresponding fragment depicted. 3. **Third Graph:** - **X-axis:** m/z (mass-to-charge ratio) - **Y-axis:** Relative intensity - Displays a distinct peak at m/z 43. - **Compound & Fragment:** Matches with the ketone (c), with the fragment drawn as indicated. Each mass spectrum is matched to its respective compound based on the base peak, which represents the most stable fragment ion generated during mass spectrometry. The fragment structures are drawn next to each spectrum to highlight the ions responsible for the base peaks.
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Transcribed Image Text:The image illustrates three structural isomers and their corresponding mass spectra. Each isomer is to be matched with its mass spectrum, and the fragment ion responsible for the base peak is identified and drawn next to the corresponding spectrum. **Compounds:** - **a.** An alcohol isomer with an alkene structure. - **b.** An aldehyde isomer. - **c.** A ketone isomer. **Mass Spectra:** 1. **First Graph:** - **X-axis:** m/z (mass-to-charge ratio) - **Y-axis:** Relative intensity - Displays multiple peaks with a significant peak around m/z 57. - **Compound & Fragment:** Matches with the aldehyde (b) with the fragment drawn as shown in the compound box. 2. **Second Graph:** - **X-axis:** m/z (mass-to-charge ratio) - **Y-axis:** Relative intensity - Shows a base peak at m/z 43. - **Compound & Fragment:** Matches with the alcohol isomer (a) with the corresponding fragment depicted. 3. **Third Graph:** - **X-axis:** m/z (mass-to-charge ratio) - **Y-axis:** Relative intensity - Displays a distinct peak at m/z 43. - **Compound & Fragment:** Matches with the ketone (c), with the fragment drawn as indicated. Each mass spectrum is matched to its respective compound based on the base peak, which represents the most stable fragment ion generated during mass spectrometry. The fragment structures are drawn next to each spectrum to highlight the ions responsible for the base peaks.
Expert Solution
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The assignment of base peak in a mass spectrum totally depends on the stability of the species formed having 100% relative intensity and intensity of other peaks decided according to this peak. 

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