General Chemistry: Principles and Modern Applications (10th Edition)

Published by Pearson Prentice Hal
ISBN 10: 0132064529
ISBN 13: 978-0-13206-452-1

Chapter 16 - Acids and Bases - Exercises - Ions as Acids and Bases (Hydrolysis) - Page 741: 57

Answer

a. pH neutral b. basic c. pH neutral d. basic e. acidic

Work Step by Step

a. Both ions are conjugate pair of a strong acid/base: pH neutral. b. KOH is a strong base and HF is a weak acid, therefore the solution of this compound will be basic. c. Both ions are conjugate pair of a strong acid/base: pH neutral. d. $Ca(OH)_2$ is a strong base, $HOCl$ is a weak acid, therefore the solution of this compound will be basic. e. $HNO_2$'s Ka is greater than $NH_3$'s Kb, therefore, the solution is acidic.
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