Organic Chemistry As a Second Language, 3e: First Semester Topics

Published by John Wiley & Sons
ISBN 10: 111801040X
ISBN 13: 978-1-11801-040-2

Chapter 3 - Acid-Base Reactions - 3.2 Factor 2 - Resonance - Problems - Page 60: 3.11


The proton on the right is more acidic.

Work Step by Step

Since oxygen is more electronegative than carbon, and both are in the same row of the periodic table, the conjugate base for when we remove the proton on the right will have more stability with charge, so this proton will be more acidic.
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