Organic Chemistry 9th Edition

Published by Brooks Cole
ISBN 10: 1305080483
ISBN 13: 978-1-30508-048-5

Chapter 20 - Carboxylic Acids and Nitriles - Exercises - Page 678a: 20

Answer

P-methylthiobenzoic acid is stronger acid than the p-methoxybenzoic acid.

Work Step by Step

This is because the methoxy group is a better electron donating group than the methyl thiol group. When electron donating groups decreases the acidity of the compound will decrease as well.
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