Consider the reaction, PbF₂(s) = Pb²+ (aq) + 2F¯(aq) A. What will happen to the solubility of the salt if the solvent is decreased to pH 3.0? [Select] B. What will happen to the solubility of the salt if Pb²+ forms a complex with concentrated HCI solution? [Select] [Select] increase stays the same decrease

Consider the reaction, PbF₂(s) = Pb²+ (aq) + 2F¯(aq) A. What will happen to the solubility of the salt if the solvent is decreased to pH 3.0? [Select] B. What will happen to the solubility of the salt if Pb²+ forms a complex with concentrated HCI solution? [Select] [Select] increase stays the same decrease

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter15: Complex Ion And Precipitation Equilibria

Section: Chapter Questions

Problem 68QAP

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Consider an amphoteric hydroxide, M(OH)2(s) , where M is a generic metal. M(OH)2(s)↽−−⇀M2+(aq)+2OH−(aq)?sp=6×10−16 M(OH)2(s)+2OH−(aq)↽−−⇀[M(OH)4]2−(aq)?f=0.06 Estimate the solubility of M(OH)2 in a solution buffered at pH = 7.0, 10.0, and 14.0. solubility at pH = 7.0 M solubility at pH = 10.0 M solubility at pH = 14.0 M
8. Calculate the Molar solubility AgI in a 1.0M NH3 solution. (Ksp of AgI = 8.3 x 10 -17); Kf for Ag (NH3)+2 is 1.5 x 107. By what factor the solubility AgI has increased due to the presence of 1.0 M ammonia? You need to show your works.
Metal sulfides are prepared by bubbling hydrogen sulfide gas, H2S, through an aqueous solution containing the metal ion, and then adjusting the pH. When the solution is saturated with H2S, which occurs when [H2S]=0.100 M, the equilibrium shown is established. H2S(aq)+2H2O(l)↽−−⇀S2−(aq)+2H3O+(aq)?eq=1.1×10−20 An aqueous solution containing 0.0570 M Pb2+ and 0.0570 M Ag+ is saturated with H2S. Above what concentration of S2− will PbS precipitate? The ?sp of PbS is 8.9×10−29. [S2−]= M Above what concentration of S2− will Ag2S precipitate? The ?sp of Ag2S is 3.3×10−50. [S2−]= M If the pH of the solution is adjusted to 2.83, which species will precipitate from the saturated H2S solution? both PbS and Ag2S neither species PbS Ag2S
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