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 - Page 158: 4.25c

Answer

$NH_{4}^{+}$ and $Cl^{-}$

Work Step by Step

When you mix ammonium and chloride, they are soluble with one another so no precipitate forms. Calcium and phosphate will form a precipitate when reacted with one another.
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