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: 46e


Cobalt III Sulfate

Work Step by Step

We see that there is a sulfate ion ($SO_4 ^{2-}$). Here, balancing the charges is more difficult than the previous problems. Since Sulfate has three compounds with a charge of 2-, the 3 sulfate ions create a charge of 6-. Since there are 2 Cobalt atoms, and since the net charge is 0, we know that the Cobalt atoms must have a charge of 6+/2=3+. Thus, we name the compound: Cobalt III Sulfate
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