Chemistry: An Atoms First Approach
2nd Edition
ISBN: 9781305079243
Author: Steven S. Zumdahl, Susan A. Zumdahl
Publisher: Cengage Learning
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Chapter 15, Problem 6RQ
Interpretation Introduction
Interpretation: The definition of selective precipitation is to be stated. The concentration of
Concept introduction: Separation of mixtures of metal ions in aqueous solution using a reagent is known as selective precipitation.
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A solution is 0.082 MM in Pb2+Pb2+ and 0.030 MM in Ag+Ag+.
1.)If selective precipitation is to be achieved using NaClNaCl, what minimum concentration of NaClNaCl do you need to begin to precipitate the ion that precipitates first?
2.)What is the concentration of each ion left in solution at the point where the second ion begins to precipitate?
Express your answers using two significant figures, separated by a comma. Express the concentration of Pb2+Pb2+ first followed by a comma, then the concentration of Ag+Ag+.
1. At what pH will Fe(OH)₃(s) begin to precipitate from 2.05 × 10⁻³ M FeCl₃? Ksp for Fe(OH)₃ is 2.79 × 10⁻³⁹.
2. What is the minimum mass of Mg(NO₃)₂ that must be added to 1.00 L of a 0.360 M HF solution to begin precipitation of MgF₂(s)? For MgF₂, Ksp = 7.4 × 10⁻⁹, and Ka for HF = 7.2 × 10⁻⁴.
Under what circumstances, if any, does a sample of solid AgCl completely dissolve in pure water?
Chapter 15 Solutions
Chemistry: An Atoms First Approach
Ch. 15 - To what reaction does the solubility product...Ch. 15 - Prob. 2RQCh. 15 - Prob. 3RQCh. 15 - Prob. 4RQCh. 15 - Prob. 5RQCh. 15 - Prob. 6RQCh. 15 - Prob. 7RQCh. 15 - Prob. 8RQCh. 15 - Prob. 9RQCh. 15 - Prob. 10RQ
Ch. 15 - Prob. 1ALQCh. 15 - Prob. 2ALQCh. 15 - Prob. 3ALQCh. 15 - A friend tells you: The constant Ksp of a salt is...Ch. 15 - Prob. 5ALQCh. 15 - Prob. 6ALQCh. 15 - Prob. 7ALQCh. 15 - For which of the following is the Ksp value of the...Ch. 15 - Ag2S(s) has a larger molar solubility than CuS...Ch. 15 - Prob. 10QCh. 15 - Prob. 11QCh. 15 - When Na3PO4(aq) is added to a solution containing...Ch. 15 - The common ion effect for ionic solids (salts) is...Ch. 15 - Prob. 14QCh. 15 - Prob. 15QCh. 15 - The stepwise formation constants for a complex ion...Ch. 15 - Prob. 17QCh. 15 - Prob. 18QCh. 15 - Write balanced equations for the dissolution...Ch. 15 - Write balanced equations for the dissolution...Ch. 15 - Prob. 21ECh. 15 - Use the following data to calculate the Ksp value...Ch. 15 - Approximately 0.14 g nickel(II) hydroxide,...Ch. 15 - The solubility of the ionic compound M2X3, having...Ch. 15 - Prob. 25ECh. 15 - Prob. 26ECh. 15 - Calculate the solubility of each of the following...Ch. 15 - Prob. 28ECh. 15 - Cream of tartar, a common ingredient in cooking,...Ch. 15 - Prob. 30ECh. 15 - Prob. 31ECh. 15 - Calculate the molar solubility of Cd(OH)2, Ksp =...Ch. 15 - Calculate the molar solubility of Al(OH)3, Ksp = 2...Ch. 15 - Calculate the molar solubility of Co(OH)3, Ksp =...Ch. 15 - Prob. 35ECh. 15 - For each of the following pairs of solids,...Ch. 15 - Calculate the solubility (in moles per liter) of...Ch. 15 - Calculate the solubility of Co(OH)2(s) (Ksp = 2.5 ...Ch. 15 - The Ksp for silver sulfate (Ag2SO4) is 1.2 105....Ch. 15 - Prob. 40ECh. 15 - Prob. 41ECh. 15 - Prob. 42ECh. 15 - Prob. 43ECh. 15 - The solubility of Pb(IO3)(s) in a 0.10-M KIO3...Ch. 15 - Prob. 45ECh. 15 - For which salt in each of the following groups...Ch. 15 - What mass of ZnS (Ksp = 2.5 1022) will dissolve...Ch. 15 - The concentration of Mg2+ in seawater is 0.052 M....Ch. 15 - Will a precipitate form when 100.0 mL of 4.0 104...Ch. 15 - A solution contains 1.0 105 M Ag+ and 2.0 106 M...Ch. 15 - A solution is prepared by mixing 100.0 mL of 1.0 ...Ch. 15 - Prob. 52ECh. 15 - Calculate the final concentrations of K+(aq),...Ch. 15 - Prob. 54ECh. 15 - A 50.0-mL sample of 0.00200 M AgNO3 is added to...Ch. 15 - Prob. 56ECh. 15 - A solution contains 1.0 105 M Na3PO4. What is the...Ch. 15 - The Ksp of Al(OH)3 is 2 1032. At what pH will a...Ch. 15 - A solution is 1 104 M in NaF, Na2S, and Na3PO4....Ch. 15 - A solution contains 0.25 M Ni(NO3)2 and 0.25 M...Ch. 15 - Write equations for the stepwise formation of each...Ch. 15 - Write equations for the stepwise formation of each...Ch. 15 - In the presence of CN, Fe3+ forms the complex ion...Ch. 15 - In the presence of NH3, Cu2+ forms the complex ion...Ch. 15 - Prob. 65ECh. 15 - Prob. 66ECh. 15 - The overall formation constant for HgI42 is 1.0 ...Ch. 15 - Prob. 68ECh. 15 - A solution is formed by mixing 50.0 mL of 10.0 M...Ch. 15 - A solution is prepared by mixing 100.0 mL of 1.0 ...Ch. 15 - a. Calculate the molar solubility of AgI in pure...Ch. 15 - Solutions of sodium thiosulfate are used to...Ch. 15 - Kf for the complex ion Ag(NH3)2+ is 1.7 107. Ksp...Ch. 15 - Prob. 74ECh. 15 - Prob. 75ECh. 15 - The solubility of copper(II) hydroxide in water...Ch. 15 - A solution contains 0.018 mole each of I, Br, and...Ch. 15 - Prob. 78AECh. 15 - Tooth enamel is composed of the mineral...Ch. 15 - Prob. 80AECh. 15 - What mass of Ca(NO3)2 must be added to 1.0 L of a...Ch. 15 - Calculate the mass of manganese hydroxide present...Ch. 15 - Prob. 83AECh. 15 - The active ingredient of Pepto-Bismol is the...Ch. 15 - Prob. 85AECh. 15 - The equilibrium constant for the following...Ch. 15 - Calculate the concentration of Pb2+ in each of the...Ch. 15 - Will a precipitate of Cd(OH)2 form if 1.0 mL of...Ch. 15 - Prob. 89AECh. 15 - Describe how you could separate the ions in each...Ch. 15 - Prob. 91AECh. 15 - Prob. 92AECh. 15 - Prob. 93CWPCh. 15 - Prob. 94CWPCh. 15 - Prob. 95CWPCh. 15 - The solubility of Pb(IO3)2(s) in a 7.2 102-M KIO3...Ch. 15 - A 50.0-mL sample of 0.0413 M AgNO3(aq) is added to...Ch. 15 - Prob. 98CWPCh. 15 - Prob. 99CPCh. 15 - Consider a solution made by mixing 500.0 mL of 4.0...Ch. 15 - a. Calculate the molar solubility of AgBr in pure...Ch. 15 - Prob. 102CPCh. 15 - Prob. 103CPCh. 15 - Calcium oxalate (CaC2O4) is relatively insoluble...Ch. 15 - What is the maximum possible concentration of Ni2+...Ch. 15 - A mixture contains 1.0 103 M Cu2+ and 1.0 103 M...Ch. 15 - Sodium tripolyphosphate (Na5P3O10) is used in many...Ch. 15 - You add an excess of solid MX in 250g water. You...Ch. 15 - a. Calculate the molar solubility of SrF2 in...Ch. 15 - Prob. 110IPCh. 15 - Prob. 111IPCh. 15 - Prob. 112IPCh. 15 - Aluminum ions react with the hydroxide ion to form...
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- When 5 M ammonia is added to a solution containing Cu(OH)2(s), the precipitate will eventually dissolve in solution. Why? If 5 M HNO3 is then added, the Cu(OH)2 precipitate re-forms. Why? In general, what effect does the ability of a cation to form a complex ion have on the solubility of salts containing that cation?arrow_forwardA solution contains 0.25 M Ni(NO3)2 and 0.25 M Cu(NO3)2. Can the metal ions be separated by slowly adding Na2CO3? Assume that for successful separation 99% of the metal ion must be precipitated before the other metal ion begins to precipitate, and assume no volume change on addition of Na2CO3.arrow_forwardSolid sodium fluoride is slowly added to an aqueous solution that contains 0.0100-M Pb2+ and 0.0100-M Ca2+. (a) Determine which precipitates first, calcium fluoride or lead(II) fluoride. (b) Calculate the percentage of Ca2+ or Pb2+ that has precipitated just prior to the precipitation of the compound that precipitates second.arrow_forward
- A 3.20-L solution of 1.25 103 M Pb(NO3)2 is mixed with a 0.80-L solution of 5.0 101 M NaCl. Calculate Q for the dissolution of PbCl2. No precipitate has formed. Is the solution supersaturated, saturated, or unsaturated?arrow_forwardWhat mass of Ca(NO3)2 must be added to 1.0 L of a 1.0-M HF solution to begin precipitation of CaF2(s)? For CaF2, Ksp = 4.0 1011 and Ka for HF = 7.2 104. Assume no volume change on addition of Ca(NO3)2(s).arrow_forwardA volume of 50 mL of 1.8 M NH3 is mixed with an equal volume of a solution containing 0.95 g of MgCl2. What mass of NH4Cl must be added to the resulting solution to prevent the precipitation of Mg(OH)2?arrow_forward
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