Introductory Chemistry (5th Edition)

Published by Pearson
ISBN 10: 032191029X
ISBN 13: 978-0-32191-029-5

Chapter 5 - Molecules and Compounds - Exercises - Problems - Page 160: 79


The names of the acids are listed below: a) Hypochlorous acid b) Chlorous acid c) Chloric acid d) Perchloric Acid

Work Step by Step

a) Since the first acid contains only one oxygen atom (the least compared to the other three acids), it must have one less oxygen than the "ous" acid. Thus, the hypo- prefix, meaning one oxygen atom fewer than for -"ous" is added on to the name and the suffix remains "ous" so Hypochlorous acid. b) The next acid contains one more oxygen than the hypochlorous aicd but one less than the chloric acid which has 3 oxygen so its simply an "ous" acid which is chlorous acid. c) The chorate ion forms chloric acid since all polyatomic ions with "ate" suffixes form "ic" acids. So the ending is replaced with "ic" and the word "acid" is added on the end to become Chloric Acid. d) Since the last acid has one more oxygen than the "ic" acid, the per- prefix, meaning one more oxygen atom than an -ate molecule must be used and the suffix remains "ic acid". Therefore, Perchloric acid.
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