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Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

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BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 15, Problem 4RQ
Textbook Problem
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List some salts whose solubility increases as the pH becomes more acidic. What is true about the anions in these salts? List some salts whose solubility remains unaffected by the solution pH. What is true about the anions in these salts?

Interpretation Introduction

Interpretation: The list of salts whose solubility increases as the pH becomes more acidic; the fact about the anions present in these salts; the list of salts whose solubility remains unaffected by the solution pH and the fact about the anions present in these salts is to be stated.

Concept introduction: According to the Le Chatelier’s principle when a change is imposed on a reaction that is in equilibrium, the reaction goes in that direction where the effect of that change is reduced.

Explanation of Solution

Explanation

To determine: The list of salts whose solubility increases as the pH becomes more acidic; the fact about the anions present in these salts; the list of salts whose solubility remains unaffected by the solution pH and the fact about the anions present in these salts.

If anion like PO43 , S2 , OH or CO32 is present, it leads to the increased solubility of the sparingly soluble salt.

The pH of the solution determines the solubility of many compounds. Most of the anions that are present in a sparingly soluble salt is basically the conjugate base of the weak acid. Take the example of a salt such as MA . The salt contains M+ cation and A anion. This anion is the conjugate base of a weak acid. The solubility this anion is shown as,

A+H2OOH+HA

The above reaction shows that if anion like PO43 , S2 , OH or CO32 is present, it leads to the increased solubility of the sparingly soluble salt.

The increased or decreased solubility of sparingly soluble salt with pH is determined by considering the Le Chatelier’s principle

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Chapter 15 Solutions

Chemistry: An Atoms First Approach
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Ch. 15 - Which of the following will affect the total...Ch. 15 - Devise as many ways as you can to experimentally...Ch. 15 - You are browsing through the Handbook of...Ch. 15 - A friend tells you: The constant Ksp of a salt is...Ch. 15 - Explain the following phenomenon: You have a test...Ch. 15 - What happens to the Ksp value of a solid as the...Ch. 15 - Which is more likely to dissolve in an acidic...Ch. 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 - Solubility is an equilibrium position, whereas Ksp...Ch. 15 - The salts in Table 15-1, with the possible...Ch. 15 - When Na3PO4(aq) is added to a solution containing...Ch. 15 - The common ion effect for ionic solids (salts) is...Ch. 15 - Sulfide precipitates are generally grouped as...Ch. 15 - List some ways one can increase the solubility of...Ch. 15 - The stepwise formation constants for a complex ion...Ch. 15 - Silver chloride dissolves readily in 2 M NH3 but...Ch. 15 - If a solution contains either Pb2+(aq) or Ag+(aq),...Ch. 15 - Write balanced equations for the dissolution...Ch. 15 - Write balanced equations for the dissolution...Ch. 15 - Use the following data to calculate the Ksp value...Ch. 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 - The concentration of Pb2+ in a solution saturated...Ch. 15 - The concentration of Ag+ in a solution saturated...Ch. 15 - Calculate the solubility of each of the following...Ch. 15 - Calculate the solubility of each of the following...Ch. 15 - Cream of tartar, a common ingredient in cooking,...Ch. 15 - Barium sulfate is a contrast agent for X-ray scans...Ch. 15 - Calculate the molar solubility of Mg(OH)2, Ksp =...Ch. 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 - For each of the following pairs of solids,...Ch. 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 - The Ksp for lead iodide (PbI2) is 1.4 108....Ch. 15 - Calculate the solubility of solid Ca3(PO4)2 (Ksp =...Ch. 15 - Calculate the solubility of solid Pb3(P04)2 (Ksp =...Ch. 15 - The solubility of Ce(IO3)3 in a 0.20-M KIO3...Ch. 15 - The solubility of Pb(IO3)(s) in a 0.10-M KIO3...Ch. 15 - Which of the substances in Exercises 27 and 28...Ch. 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 - A solution contains 2.0 103 M Ce3+ and 1.0 102 M...Ch. 15 - Calculate the final concentrations of K+(aq),...Ch. 15 - A solution is prepared by mixing 75.0 mL of 0.020...Ch. 15 - A 50.0-mL sample of 0.00200 M AgNO3 is added to...Ch. 15 - A solution is prepared by mixing 50.0 mL of 0.10 M...Ch. 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 - When aqueous KI is added gradually to mercury(II)...Ch. 15 - As sodium chloride solution is added to a solution...Ch. 15 - The overall formation constant for HgI42 is 1.0 ...Ch. 15 - A solution is prepared by adding 0.10 mole of...Ch. 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 - The copper(I) ion forms a chloride salt that has...Ch. 15 - A series of chemicals were added to some...Ch. 15 - The solubility of copper(II) hydroxide in water...Ch. 15 - A solution contains 0.018 mole each of I, Br, and...Ch. 15 - You have two salts, AgX and AgY, with very similar...Ch. 15 - Tooth enamel is composed of the mineral...Ch. 15 - The U.S. Public Health Service recommends the...Ch. 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 - On a hot day, a 200.0-mL sample of a saturated...Ch. 15 - The active ingredient of Pepto-Bismol is the...Ch. 15 - Nanotechnology has become an important field, with...Ch. 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 - a. 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