Answer
$pH$ is the negative logarithm of the hydronium ion concentration:
$pH = -log[H_3O^+]$
At $25^{\circ}C:$
$pH < 7: Acidic$
$pH = 7: Neutral$
$pH > 7: Basic$
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 15 - Sections 15.1-15.12 - Exercises - Review Questions - Page 745: 15
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