Open Question
A 25.00 mL sample of 1.00 M CH3CO2H is titrated with 1.00 M NaOH. Calculate the pH after 30.00 mL of NaOH has been added. (Ka = 1.8 x 10^-5) (a) 6.90 (b) 9.36 (c) 11.54 (d) 12.95
Ch.17 - Applications of Aqueous Equilibria
Chapter 17, Problem 13
What is the molar solubility of Ag2SO3 in water? The solubility-product constant for silver sulfite is 1.5 x 10^-14 at 25 °C. (a) 1.2 x 10^-7 M (b) 2.0 x 10^-5 M (c) 8.7 x 10^-8 M (d) 1.6 x 10^-5 M
Verified step by step guidance1
Write the balanced dissolution equation for Ag2SO3: Ag2SO3(s) \rightleftharpoons 2Ag^+(aq) + SO3^{2-}(aq).
Express the solubility product constant (K_{sp}) in terms of the concentrations of the ions: K_{sp} = [Ag^+]^2[SO3^{2-}].
Let the molar solubility of Ag2SO3 be 's'. Then, [Ag^+] = 2s and [SO3^{2-}] = s.
Substitute the expressions for the ion concentrations into the K_{sp} expression: K_{sp} = (2s)^2(s) = 4s^3.
Set the K_{sp} expression equal to the given solubility-product constant and solve for 's': 4s^3 = 1.5 \times 10^{-14}.
Related Practice
Textbook Question
The pH titration curve applies to the titration of 40.0 mL of a 0.100 M solution of an acid with 0.100 M NaOH. What are the approximate pKa values for this acid?
(a) pKa1 = 5, pKa2 = 10
(b) pKa1 = 7, pKa2 = 11
(c) pKa1 = 5, pKa2 = 10, pKa3 = 13
(d) pKa1 = 5, pKa2 = 7, pKa3 = 10
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Textbook Question
What is the solubility-constant expression for Ca3(PO4)2 (s)?
(a) [Ca2+]3 [PO43-]2
(b) [Ca2+]3 [PO43-]2 / [Ca3(PO4)2]
(c) [Ca(PO4)2] / [Ca2+]3 [PO43-]2
(d) [Ca2+]2 [PO43-]3
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Open Question
Consider a saturated solution of the slightly soluble salt BaCO3. Adding which of the following substances will increase the solubility? (a) HNO3 (b) Na2CO3 (c) Ba(NO3)2 (d) KOH
Textbook Question
What is the molar solubility of BaF2 in a solution containing 0.0750 M LiF (Ksp = 1.7 x 10^-6)
(a) 2.3 x 10^-5 M
(b) 3.0 x 10^-4 M
(c) 1.2 x 10^-2 M
(d) 1.3 x 10^-3 M
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2
rank
Textbook Question
What is the molar solubility of AgI in 0.20 M NaCN?
(a) 6.2 x 10^-4 M
(b) 1.0 x 10^-1 M
(c) 7.6 x 10^-2 M
(d) 2.1 x 10^-3 M
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