Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 4 - Reactions in Aqueous Solution - Exercises: 4.24b

Answer

The precipitate is copper (II) hydroxide 2KOH(aq) + Cu(NO$_{3}$)$_2$ (aq) -> 2KNO$_{3}$ (aq) + Cu(OH)$_2$ (s)

Work Step by Step

Ionic compounds containing hydroxide ions are insoluble unless they contain an alkali metal, barium, strontium, or calcium ion. Because hydroxide reacts with copper, it will form a solid precipitate.
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