To a concentrated buffer of pH 9.0 was added an equal volume of an aqueous solution that was 0.20 M in each of the ions Ca2+,Cd2+,and Cu2+.The expected precipitate would consist of: Salt: calcium hydroxide cadmium hydroxide copper(II)hydroxide Ksp: 4.0 × 10-6 2.0 × 10-14 1.8 × 10-19

A) only Ca(OH)2 B) only Cd(OH)2 C) only Cu(OH)2 D) only Cd(OH)2 and Cu(OH)2 E) Ca(OH)2,Cd(OH)2,and Cu(OH)2 A) only Ca(OH)2 B) only Cd(OH)2 C) only Cu(OH)2 D) only Cd(OH)2 and Cu(OH)2 E) Ca(OH)2,Cd(OH)2,and Cu(OH)2

What is the concentration of free Zn2+(aq)if 0.020 M Zn2+ solution is mixed with an equal volume of 2.0 M NH3(aq)? Kf for [Zn(NH3)4]2+ is 4.1 × 108.

A) 2.5 × 10-11 M B) 2.9 × 10-11 M C) 1.7 × 10-10 M D) 9.6 × 10-11 M E) 2.4 × 10-9 M A) 2.5 × 10-11 M B) 2.9 × 10-11 M C) 1.7 × 10-10 M D) 9.6 × 10-11 M E) 2.4 × 10-9 M

In a qualitative cation analysis,the unknown ion is not precipitated by aqueous solutions of HCl(aq),H2S(aq),or CO32-(aq).A flame test produced a violet flame.The unknown ion is ________.

A) Ag+ B) Pb2+ C) Fe2+ D) K+ E) NH4+ A) Ag+ B) Pb2+ C) Fe2+ D) K+ E) NH4+

What is the free Cu2+(aq)concentration if 0.020 M Cu2+(aq)solution is mixed with an equal volume of 4.0 M NH3(aq)? Kf for [Cu(NH3)4]2+ is 1.1 × 1013.

A) 5.7 × 10-15 M B) 2.8 × 10-16 M C) 6.2 × 10-17 M D) 4.5 × 10-15 M E) 1.7 × 10-16 M A) 5.7 × 10-15 M B) 2.8 × 10-16 M C) 6.2 × 10-17 M D) 4.5 × 10-15 M E) 1.7 × 10-16 M

An aqueous solution contains [Ba2+] = 5.0 × 10-5 M,[Ag+] = 3.0 × 10-5 M,and [Zn2+] = 2.0 × 10-7 M.Sodium oxalate is slowly added so that [C2O42-] increases. Which one of the oxalates precipitates first?

A) BaC2O4 B) Na2C2O4 C) ZnC2O4 D) Ag2C2O4 E) ZnC2O4 and Ag2C2O4 precipitate together A) BaC2O4 B) Na2C2O4 C) ZnC2O4 D) Ag2C2O4 E) ZnC2O4 and Ag2C2O4 precipitate together

What is the molar solubility of barium fluoride ( BaF2 )in water? The solubility-product constant for BaF2 (s)is 1.7 × 10-6 at

A) 6.5 × 10-4 mol L-1 B) 1.2 × 10-2 mol L-1 C) 1.8 × 10-3 mol L-1 D) 7.5 × 10-3 mol L-1 E) 5.7 × 10-7 mol L-1 A) 6.5 × 10-4 mol L-1 B) 1.2 × 10-2 mol L-1 C) 1.8 × 10-3 mol L-1 D) 7.5 × 10-3 mol L-1 E) 5.7 × 10-7 mol L-1

When 100 mL each of 2.0 × 10-5 M Ca2+(aq)and 2.0 × 10-3 M CO32-(aq)are mixed,what is the remaining Ca2+(aq)ion concentration and is precipitation complete? The solubility product constant of CaCO3(s)is 2.8 × 10-9.

A) 2.8 × 10-6 M,no B) 1.0 × 10-3 M,no C) 6.9 × 10-5 M,no D) 2.8 × 10-3 M,no E) 2.8 × 10-6 M,yes A) 2.8 × 10-6 M,no B) 1.0 × 10-3 M,no C) 6.9 × 10-5 M,no D) 2.8 × 10-3 M,no E) 2.8 × 10-6 M,yes

What is the molar solubility of AgCl in 0.40 mol L-1 NH3(aq)? Ksp for AgCl(s)is 1.8 × 10-10 and Kf for Ag(NH3)2+ is

A) 1.3 × 10-5 mol L-1 B) 2.0 × 10-5 mol L-1 C) 2.2 × 10-2 mol L-1 D) 5.5 × 10-2 mol L-1 A) 1.3 × 10-5 mol L-1 B) 2.0 × 10-5 mol L-1 C) 2.2 × 10-2 mol L-1 D) 5.5 × 10-2 mol L-1

The solubility product constant of Li3PO4 is 3.2 × 10-9.What is the molar solubility of Li3PO4 in water?

A) 3.3 × 10-3 M B) 9.3 × 10-4 M C) 7.5 × 10-3 M D) 1.5 × 10-3 M E) 5.7 × 10-5 M A) 3.3 × 10-3 M B) 9.3 × 10-4 M C) 7.5 × 10-3 M D) 1.5 × 10-3 M E) 5.7 × 10-5 M

Calculate the Ksp for silver carbonate if the solubility of Ag2CO3(s)in pure water is 3.5 × 10-2 g L-1.

A) 1.3 × 10-4 B) 8.4 × 10-12 C) 4.6 × 10-7 D) 5.8 × 10-10 A) 1.3 × 10-4 B) 8.4 × 10-12 C) 4.6 × 10-7 D) 5.8 × 10-10

Exam 18: Solubility and Complex-Ion Equilibria

To a saturated aqueous solution of barium carbonate is added just enough sodium sulfate to achieve a maximum sulfate concentration without precipitation of barium sulfate.If no complexes form and the "salt effect" is negligible,what is the concentration of the sulfate ion in this solution? [K_sp for barium carbonate is 1.6 × 10^-9;K_sp for barium sulfate is 7.9 × 10^-11]

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(Multiple Choice)

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Question 1

Correct Answer:

Verified

Calculate the molar solubility of thallium chloride (TlCl)in 0.30 mol L^-1 NaCl(aq)at 25 °C.K_sp for TlCl(s)is

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(Multiple Choice)

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Question 2

Correct Answer:

Verified

Which of the following is least soluble?

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(Multiple Choice)

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Question 3

Correct Answer:

Verified

To a concentrated buffer of pH 9.0 was added an equal volume of an aqueous solution that was 0.20 M in each of the ions Ca²⁺,Cd²⁺,and Cu²⁺.The expected precipitate would consist of: Salt: calcium hydroxide cadmium hydroxide copper(II)hydroxide K_sp: 4.0 × 10^-6 2.0 × 10^-14 1.8 × 10^-19

(Multiple Choice)

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Question 4

What is the concentration of free Zn²⁺(aq)if 0.020 M Zn²⁺ solution is mixed with an equal volume of 2.0 M NH₃(aq)? K_f for [Zn(NH₃)₄]²⁺ is 4.1 × 10⁸.

(Multiple Choice)

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Question 5

The following table lists five compounds and their Ksp value.Which is least soluble?

(Multiple Choice)

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Question 6

Which of the following should dissolve the smallest amount of silver sulfide per liter,assuming no complex formation?

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Question 7

In a qualitative cation analysis,the unknown ion is not precipitated by aqueous solutions of HCl(aq),H₂S(aq),or CO₃^2-(aq).A flame test produced a violet flame.The unknown ion is ________.

(Multiple Choice)

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Question 8

What is the free Cu²⁺(aq)concentration if 0.020 M Cu²⁺(aq)solution is mixed with an equal volume of 4.0 M NH₃(aq)? K_f for [Cu(NH₃)₄]²⁺ is 1.1 × 10¹³.

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Question 9

The solubility of cerium iodate,Ce(IO₃)₃,molar mass = 664.83 g/mol,in pure water is 124 mg per 100 mL of water.Calculate the solubility product constant for cerium iodate.

(Multiple Choice)

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Question 10

An aqueous solution contains [Ba²⁺] = 5.0 × 10^-5 M,[Ag⁺] = 3.0 × 10^-5 M,and [Zn²⁺] = 2.0 × 10^-7 M.Sodium oxalate is slowly added so that [C₂O₄^2-] increases. Which one of the oxalates precipitates first?

(Multiple Choice)

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Question 11

Concentrated aqueous solutions of iron (III)chloride,sodium hydroxide,and potassium nitrate are mixed together.The precipitate which forms is ________.

(Multiple Choice)

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Question 12

What is the molar solubility of barium fluoride ( BaF₂ )in water? The solubility-product constant for BaF₂ (s)is 1.7 × 10^-6 at

(Multiple Choice)

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Question 13

When 100 mL each of 2.0 × 10^-5 M Ca²⁺(aq)and 2.0 × 10^-3 M CO₃^2-(aq)are mixed,what is the remaining Ca²⁺(aq)ion concentration and is precipitation complete? The solubility product constant of CaCO₃(s)is 2.8 × 10^-9.

(Multiple Choice)

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Question 14

Qualitative cation analysis has been replaced in recent years by instrumental analysis.

(True/False)

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Question 15

What is the molar solubility of AgCl in 0.40 mol L^-1 NH₃(aq)? K_sp for AgCl(s)is 1.8 × 10^-10 and K_f for Ag(NH₃)₂⁺ is

(Multiple Choice)

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Question 16

The solubility product constant of Li₃PO₄ is 3.2 × 10^-9.What is the molar solubility of Li₃PO₄ in water?

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Question 17

The common ion effect is a case of Hess's law.

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Question 18

Consider an aqueous solution which is 0.020 M in Pb²⁺ and 0.20 M in Ag⁺.If concentrated aqueous potassium iodide solution (so that volume changes may be neglected)is added gradually with good stirring to this solution,which precipitate will form first? K_sp for PbI₂ = 7.1 × 10^-9;for AgI = 8.31 × 10^-17

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Question 19

Calculate the K_sp for silver carbonate if the solubility of Ag₂CO₃(s)in pure water is 3.5 × 10^-2g L^-1.

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Question 20

Showing 1 - 20 of 104

Exam 18: Solubility and Complex-Ion Equilibria

Calculate the molar solubility of thallium chloride (TlCl)in 0.30 mol L-1 NaCl(aq)at 25 °C.Ksp for TlCl(s)is

Which of the following is least soluble?

To a concentrated buffer of pH 9.0 was added an equal volume of an aqueous solution that was 0.20 M in each of the ions Ca2+,Cd2+,and Cu2+.The expected precipitate would consist of: Salt: calcium hydroxide cadmium hydroxide copper(II)hydroxide Ksp: 4.0 × 10-6 2.0 × 10-14 1.8 × 10-19

What is the concentration of free Zn2+(aq)if 0.020 M Zn2+ solution is mixed with an equal volume of 2.0 M NH3(aq)? Kf for [Zn(NH3)4]2+ is 4.1 × 108.

The following table lists five compounds and their Ksp value.Which is least soluble?

Which of the following should dissolve the smallest amount of silver sulfide per liter,assuming no complex formation?

In a qualitative cation analysis,the unknown ion is not precipitated by aqueous solutions of HCl(aq),H2S(aq),or CO32-(aq).A flame test produced a violet flame.The unknown ion is ________.

What is the free Cu2+(aq)concentration if 0.020 M Cu2+(aq)solution is mixed with an equal volume of 4.0 M NH3(aq)? Kf for [Cu(NH3)4]2+ is 1.1 × 1013.

The solubility of cerium iodate,Ce(IO3)3,molar mass = 664.83 g/mol,in pure water is 124 mg per 100 mL of water.Calculate the solubility product constant for cerium iodate.

An aqueous solution contains [Ba2+] = 5.0 × 10-5 M,[Ag+] = 3.0 × 10-5 M,and [Zn2+] = 2.0 × 10-7 M.Sodium oxalate is slowly added so that [C2O42-] increases. Which one of the oxalates precipitates first?

Concentrated aqueous solutions of iron (III)chloride,sodium hydroxide,and potassium nitrate are mixed together.The precipitate which forms is ________.

What is the molar solubility of barium fluoride ( BaF2 )in water? The solubility-product constant for BaF2 (s)is 1.7 × 10-6 at

When 100 mL each of 2.0 × 10-5 M Ca2+(aq)and 2.0 × 10-3 M CO32-(aq)are mixed,what is the remaining Ca2+(aq)ion concentration and is precipitation complete? The solubility product constant of CaCO3(s)is 2.8 × 10-9.

Qualitative cation analysis has been replaced in recent years by instrumental analysis.

What is the molar solubility of AgCl in 0.40 mol L-1 NH3(aq)? Ksp for AgCl(s)is 1.8 × 10-10 and Kf for Ag(NH3)2+ is

The solubility product constant of Li3PO4 is 3.2 × 10-9.What is the molar solubility of Li3PO4 in water?

The common ion effect is a case of Hess's law.

Calculate the Ksp for silver carbonate if the solubility of Ag2CO3(s)in pure water is 3.5 × 10-2 g L-1.

Matter: Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Compounds

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Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Valence Bond and Molecular Orbital Theories

Intermolecular Forces: Liquids and Solids

Spontaneous Change: Entropy and Gibbs Energy

Solutions and Their Physical Properties

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acidbase Equilibria

Electrochemistry

Chemical Kinetics

Chemistry of the Main-Group Elements I: Groups 1,2,13,and 14

Chemistry of the Main-Group Elements Ii: Groups 18,17,16,15,and Hydrogen

The Transition Elements

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Structures of Organic Compounds

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Calculate the molar solubility of thallium chloride (TlCl)in 0.30 mol L^-1 NaCl(aq)at 25 °C.K_sp for TlCl(s)is

To a concentrated buffer of pH 9.0 was added an equal volume of an aqueous solution that was 0.20 M in each of the ions Ca²⁺,Cd²⁺,and Cu²⁺.The expected precipitate would consist of: Salt: calcium hydroxide cadmium hydroxide copper(II)hydroxide K_sp: 4.0 × 10^-6 2.0 × 10^-14 1.8 × 10^-19

What is the concentration of free Zn²⁺(aq)if 0.020 M Zn²⁺ solution is mixed with an equal volume of 2.0 M NH₃(aq)? K_f for [Zn(NH₃)₄]²⁺ is 4.1 × 10⁸.

In a qualitative cation analysis,the unknown ion is not precipitated by aqueous solutions of HCl(aq),H₂S(aq),or CO₃^2-(aq).A flame test produced a violet flame.The unknown ion is ________.

What is the free Cu²⁺(aq)concentration if 0.020 M Cu²⁺(aq)solution is mixed with an equal volume of 4.0 M NH₃(aq)? K_f for [Cu(NH₃)₄]²⁺ is 1.1 × 10¹³.

The solubility of cerium iodate,Ce(IO₃)₃,molar mass = 664.83 g/mol,in pure water is 124 mg per 100 mL of water.Calculate the solubility product constant for cerium iodate.

An aqueous solution contains [Ba²⁺] = 5.0 × 10^-5 M,[Ag⁺] = 3.0 × 10^-5 M,and [Zn²⁺] = 2.0 × 10^-7 M.Sodium oxalate is slowly added so that [C₂O₄^2-] increases. Which one of the oxalates precipitates first?

What is the molar solubility of barium fluoride ( BaF₂ )in water? The solubility-product constant for BaF₂ (s)is 1.7 × 10^-6 at

When 100 mL each of 2.0 × 10^-5 M Ca²⁺(aq)and 2.0 × 10^-3 M CO₃^2-(aq)are mixed,what is the remaining Ca²⁺(aq)ion concentration and is precipitation complete? The solubility product constant of CaCO₃(s)is 2.8 × 10^-9.

What is the molar solubility of AgCl in 0.40 mol L^-1 NH₃(aq)? K_sp for AgCl(s)is 1.8 × 10^-10 and K_f for Ag(NH₃)₂⁺ is

The solubility product constant of Li₃PO₄ is 3.2 × 10^-9.What is the molar solubility of Li₃PO₄ in water?

Calculate the K_sp for silver carbonate if the solubility of Ag₂CO₃(s)in pure water is 3.5 × 10^-2g L^-1.