## Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall

# Chapter 3 - Sections 3.1-3.12 - Exercises - Problems by Topic - Page 131: 45a

#### Answer

$CoSO_{4}.7H_{2}O$ is named Cobalt(II) sulfate heptahydrate.

#### Work Step by Step

$CoSO_{4}.7H_{2}O$ has its cation $Co^{2+}$, a charge of (II), its anion $SO_{4}^{2-}$ and 7 (hepta) water molecules of hydration. Hence, its name is cobalt (II) sulfate heptahydrate.

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