Chemistry: The Molecular Science (5th Edition)

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

Chapter 15 - Additional Aqueous Equilibria - Questions for Review and Thought - Topical Questions - Page 693b: 51f


$1Hg_2SO_4(s) \lt -- \gt 2Hg^{+}(aq) +1S{O_4}^{2-}(aq)$ $K_{sp} (Hg_2SO_4) = [Hg^{+}]^2[S{O_4}^{2-}]$

Work Step by Step

- Mercury (I) $(Hg^{+})$ sulfate $(S{O_4}^{2-})$: $Hg_2SO_4$ 1. Write the dissociation equation for this salt: - Identify the ions of the salt: $(Hg^{+})$ and $(S{O_4}^{2-})$, these are the products, and the reactant is the solid salt. $Hg_2SO_4(s) \lt -- \gt Hg^{+}(aq) +S{O_4}^{2-}(aq)$ - Balance the equation: $1Hg_2SO_4(s) \lt -- \gt 2Hg^{+}(aq) +1S{O_4}^{2-}(aq)$ 2. Now, write the $K_{sp}$ expression. - Multiply the concentrations of the ions; - The equilibrium coefficients represent the exponent of these concentrations: $K_{sp} (Hg_2SO_4) = [Hg^{+}]^2 \times [S{O_4}^{2-}]^1$
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