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What are the functional groups in p-cresol? What would you expect there to be in an IR spectrum for p-cresol? OH CH3

What are the functional groups in p-cresol? What would you expect there to be in an IR spectrum for p-cresol? OH CH3

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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**Question:** What are the functional groups in p-cresol? What would you expect there to be in an IR spectrum for p-cresol? **Diagram Description:** The diagram is a structural representation of p-cresol, a chemical compound. It consists of a benzene ring with two substituents: a hydroxyl group (OH) and a methyl group (CH₃). The hydroxyl group is attached to one of the carbon atoms in the benzene ring, and the methyl group is attached to the carbon atom directly opposite the hydroxyl group, indicating a para position. **Explanation:** **Functional Groups in p-Cresol:** 1. **Hydroxyl Group (OH):** This is a characteristic feature of phenols, which typically appears as a broad peak in the IR spectrum due to O-H stretching. 2. **Methyl Group (CH₃):** This is an alkyl functional group, contributing to C-H stretching peaks in the IR spectrum. 3. **Aromatic Ring:** The benzene ring offers distinctive peaks due to C=C stretching within the aromatic ring. **Infrared (IR) Spectrum Expectations for p-Cresol:** - **O-H Stretch:** Broad peak around 3200-3550 cm⁻¹. - **Aromatic C-H Stretch:** Peaks in the region of 3000-3100 cm⁻¹. - **Methyl C-H Stretch:** Peaks around 2850-2960 cm⁻¹. - **Aromatic C=C Stretch:** Peaks typically found between 1450-1600 cm⁻¹. - Other relevant peaks might include bending or deformation modes associated with these functional groups. In an educational context, understanding these functional groups and their spectroscopic characteristics aids in identifying and analyzing chemical compounds.
Transcribed Image Text:**Question:** What are the functional groups in p-cresol? What would you expect there to be in an IR spectrum for p-cresol? **Diagram Description:** The diagram is a structural representation of p-cresol, a chemical compound. It consists of a benzene ring with two substituents: a hydroxyl group (OH) and a methyl group (CH₃). The hydroxyl group is attached to one of the carbon atoms in the benzene ring, and the methyl group is attached to the carbon atom directly opposite the hydroxyl group, indicating a para position. **Explanation:** **Functional Groups in p-Cresol:** 1. **Hydroxyl Group (OH):** This is a characteristic feature of phenols, which typically appears as a broad peak in the IR spectrum due to O-H stretching. 2. **Methyl Group (CH₃):** This is an alkyl functional group, contributing to C-H stretching peaks in the IR spectrum. 3. **Aromatic Ring:** The benzene ring offers distinctive peaks due to C=C stretching within the aromatic ring. **Infrared (IR) Spectrum Expectations for p-Cresol:** - **O-H Stretch:** Broad peak around 3200-3550 cm⁻¹. - **Aromatic C-H Stretch:** Peaks in the region of 3000-3100 cm⁻¹. - **Methyl C-H Stretch:** Peaks around 2850-2960 cm⁻¹. - **Aromatic C=C Stretch:** Peaks typically found between 1450-1600 cm⁻¹. - Other relevant peaks might include bending or deformation modes associated with these functional groups. In an educational context, understanding these functional groups and their spectroscopic characteristics aids in identifying and analyzing chemical compounds.
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