Chemistry: The Molecular Science (5th Edition)

Published by Cengage Learning
ISBN 10: 1285199049
ISBN 13: 978-1-28519-904-7

Chapter 14 - Acids and Bases - Conceptual Exercise 14.25 - Lewis Acids and Bases - Page 645: a


$PH_3$ is a Lewis base.

Work Step by Step

Drawing the Lewis structure, we can see that, the central atom has a lone pair of electrons, therefore, this compound can behave as a Lewis base. For example, when reacting with water: $PH_3(aq) + H_2O(l) \lt -- \gt P{H_4}^+(aq) + OH^-(aq)$ The lone pair is donated to create a bond between the molecule and one hydrogen from the Lewis acid: $H_2O$. ------
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