Answered: As we will learn in Section 15.12, many… | bartleby

Organic Chemistry: A Guided Inquiry

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter13: Substitution

Section: Chapter Questions

Problem 2E

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Question

As we will learn in Section 15.12, many antioxidants-compounds that prevent unwanted radical oxidation reactions from
occurring-are phenols, compounds that contain an OH group bonded directly to a benzene ring.
a. Explain why homolysis of the O-H bond in phenol requires considerably less energy than homolysis of the O-H bond in
ethanol (362 kJ/mol vs. 438 kJ/mol).
b. Why is the C-O bond in phenol shorter than the C-O bond in ethanol?
-O-H
CH,CH2-0-H
phenol
ethanol

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