Chemistry: The Molecular Science (5th Edition)

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

Chapter 15 - Additional Aqueous Equilibria - Questions for Review and Thought - Topical Questions - Page 693c: 77a


In acidic solution: $- Zn(OH)_2 (aq) + 2H_3O^+(aq) \lt -- \gt Zn^{2+}(aq) + 2 H_2O(l)$ In basic solution: $- Zn(OH)_2(aq) + 2 OH^- (aq) \lt -- \gt [Zn(OH)_4]^{2-}(aq)$

Work Step by Step

Metal hydroxides are amphoteric, and their behavior depends on the pH of the solution. If the solution is basic, it will react with the hydroxide ions, and if the solution is acidic, it will react with the hydronium ions.
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