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: 50a


$K_{sp} = [Ag^+]^3[As{O_4}^{3-}]$

Work Step by Step

1. Identify the ions, and write the equilibrium reaction for the dissociation of the salt $(Ag_3AsO_4)$: - $Ag^{+}$ and $A{sO_4}^{3-}$ - $Ag_3AsO_4(s) \lt -- \gt Ag^{+}(aq) + A{sO_4}^{3-}(aq)$ 2. Balance the reaction: - $1Ag_3AsO_4(s) \lt -- \gt 3Ag^{+}(aq) + 1A{sO_4}^{3-}(aq)$ 3. Write the $K_{sp}$ expression: - Multiply the concentrations of the ions. - The balancing coefficients are used to determine the exponents of the concentrations. - $K_{sp} = [Ag^+]^3 \times[As{O_4}^{3-}]^1$
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