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 - Problem Solving Practice 15.8 - Page 678: b


$K_{sp} = [Hg^{2+}][I^-]^2$

Work Step by Step

1. Identify the ions, and write the equilibrium reaction for the dissociation of the salt $(HgI_2)$: - $Hg^{2+}$ and $I^-$ - $HgI_2(s) \lt -- \gt Hg^{2+}(aq) + I^-(aq)$ 2. Balance the reaction: - $1HgI_2(s) \lt -- \gt 1Hg^{2+}(aq) + 2I^-(aq)$ 3. Write the $K_{sp}$ expression: - Multiply the concentrations of the ions. - The balancing coefficients are used to determine the exponents of the concentrations. - $K_{sp} = [Hg^{2+}]^1 \times [I^-]^2$
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