Chemistry: The Central Science (13th Edition)

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

Chapter 22 - Chemistry of the Nonmetals - Additional Exercises - Page 994: 22.81e



Work Step by Step

$H_{3}PO_{4}$ condenses to $H_{4}P_{2}O_{7}$ when heated and releases water vapors.
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