Chemistry: The Molecular Science (5th Edition)

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

Chapter 2 - Chemical Compounds - Questions for Review and Thought - Topical Questions - Page 90b: 45d

Answer

$(NH_4)_2HPO_4$

Work Step by Step

We know that $NH_4$ has a +1 charge and that $HPO_4$ has a -2 charge. Thus, to write the formula for the compound, pick the smallest ratio of the cation and the anion that will make the overall molecule neutral.
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