Textbook Question
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH: (c) benzoic acid (C6H5COOH).
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Ch.17 - Additional Aspects of Aqueous Equilibria
Chapter 17, Problem 51
Write the expression for the solubility-product constant for each of the following ionic compounds: Fe(OH)2.
Verified step by step guidance1
Identify the dissociation equation for the compound Fe(OH)_2 in water: Fe(OH)_2(s) \rightleftharpoons Fe^{2+}(aq) + 2OH^{-}(aq).
Understand that the solubility-product constant (K_{sp}) is an equilibrium constant that applies to the dissolution of a sparingly soluble compound.
Write the expression for the solubility-product constant (K_{sp}) using the concentrations of the ions in the dissociation equation: K_{sp} = [Fe^{2+}][OH^{-}]^2.
Note that the concentration of the solid Fe(OH)_2 is not included in the K_{sp} expression because it is a pure solid and its activity is considered to be 1.
Remember that the K_{sp} expression is used to determine the solubility of the compound in water and to predict whether a precipitate will form under certain conditions.
Related Practice
Open Question
For each statement, indicate whether it is true or false. (c) The solubility of a slightly soluble salt is independent of the presence of a common ion. (d) The solubility product of a slightly soluble salt is independent of the presence of a common ion.
Textbook Question
The solubility of two slightly soluble salts of M2 + , MA and MZ2, is the same, 4 * 10-4 mol/L. (c) If you added an equal volume of a solution saturated in MA to one saturated in MZ2, what would be the equilibrium concentration of the cation, M2+?
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Textbook Question
(a) True or false: 'solubility' and 'solubility-product constant' are the same number for a given compound.
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Textbook Question
(b) Write the expression for the solubility-product constant for each of the following ionic compounds: MnCO3, Hg(OH)2, and Cu3(PO4)3.
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Textbook Question
(a) I f t he molar solubility of CaF2 at 35 C i s 1.24 * 10-3 mol>L, what is Ksp at this temperature?
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