Answer
$pH=3.39$
Work Step by Step
$K=[P][H_3O^+]/[PH^+]=K_w/K_{b,P}$
$6.67\cdot10^{-6}=x\cdot x/(0.025-x)$
$x=[H_3O^+]=0.000405\ M$
$pH=3.39$
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Chapter 16 Principles of Chemical Reactivity: The Chemistry of Acids and Bases - Study Questions - Page 629f: 94
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