0.10 M potassium chromate is slowly added to a solution containing 0.50 M AgNO3 and 0.50 M Ba(NO3)2.What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaCrO4 are 1.1 × 10-12 and 1.2 × 10-10,respectively.

A) 6)5 × 10-5 M B) 1)3 × 10-4 M C) 3)2 × 10-4 M D) 6)8 × 10-2 M A) 6)5 × 10-5 M B) 1)3 × 10-4 M C) 3)2 × 10-4 M D) 6)8 × 10-2 M

What is the silver ion concentration for a saturated solution of Ag2CO3 if the Ksp for Ag2CO3 is 8.4 × 10-12?

A) 2)90 × 10-6 M B) 2)03 × 10-4 M C) 2)56 × 10-4 M D) 4)06 × 10-4 M A) 2)90 × 10-6 M B) 2)03 × 10-4 M C) 2)56 × 10-4 M D) 4)06 × 10-4 M

The following pictures represent solutions that contain a weak acid HA (pKS1U1B1aS1U1B0 = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent AS1U1P1-S1S1P0 ions.(KS1U1P1+S1S1P0,HS1U1B13S1U1B0OS1U1P1+S1S1P0,OHS1U1P1-S1S1P0,and solvent HS1U1B12S1U1B0O molecules have been omitted for clarity. ) -For which of these solutions is pH = pKa?

A) All have pH = pKa. B) (1),(2)and (3) C) (1)and (4) D) (2)and (3) A) All have pH = pKa. B) (1),(2)and (3) C) (1)and (4) D) (2)and (3)

The following pictures represent solutions of AgCl,which may also contain ions other than AgS1U1P1+S1S1P0 and ClS1U1P1-S1S1P0 which are not shown.Gray spheres represent AgS1U1P1+S1S1P0 ions and dotted spheres represent ClS1U1P1-S1S1P0 ions. -If solution (1)is a saturated solution of AgCl,which of solutions (1)-(4)represents the solution after a small amount of HCl is added and equilibrium is restored?

A) (1) B) (2) C) (3) D) (4) A) (1) B) (2) C) (3) D) (4)

The following pictures represent solutions of CuS,which may also contain ions other than CuS1U1P12+S1S1P0 and SS1U1P12-S1S1P0 which are not shown.Gray spheres represent CuS1U1P12+S1S1P0 ions and dotted spheres represent SS1U1P12-S1S1P0 ions. -If solution (1)is a saturated solution of CuS,which of solutions (2)-(4)are unsaturated?

A) only (2) B) only (3) C) only (4) D) (3)and (4) A) only (2) B) only (3) C) only (4) D) (3)and (4)

The neutralization constant Kn for the neutralization of acetylsalicylic acid (C9H8O4)and codeine (C18H21NO3)is 4.8 × 104.The acid dissociation constant Ka for acetylsalicylic acid is 3.0 × 10-4.What is the base dissociation constant Kb for codeine?

A) 4)8 × 10-24 B) 6)3 × 10-23 C) 1)6 × 10-6 D) 1)4 × 1015 A) 4)8 × 10-24 B) 6)3 × 10-23 C) 1)6 × 10-6 D) 1)4 × 1015

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.0 10 M CH3CO2Na? Assume that the volume of the solutions are additive and that Ka = 1.8 × 10-5 for CH3CO2H.

A) 2)87 B) 3)74 C) 4)7 5 D) 5)74 A) 2)87 B) 3)74 C) 4)7 5 D) 5)74

Which metal sulfides can be precipitated from a solution that is 0.01 M in Mn2+,Zn2+,Pb2+ and Cu2+ and 0.10 M in H2S at a pH of 1.0?

A) MnS B) CuS C) PbS,CuS D) ZnS,PbS,CuS A) MnS B) CuS C) PbS,CuS D) ZnS,PbS,CuS

The following pictures represent solutions that contain a weak acid HA (pKS1U1B1aS1U1B0 = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent AS1U1P1-S1S1P0 ions.(KS1U1P1+S1S1P0,HS1U1B13S1U1B0OS1U1P1+S1S1P0,OHS1U1P1-S1S1P0,and solvent HS1U1B12S1U1B0O molecules have been omitted for clarity. ) -Which of these solutions are buffers?

A) (1)and (2) B) (1)and (3) C) (1),(2)and (3) D) All are buffer solutions. A) (1)and (2) B) (1)and (3) C) (1),(2)and (3) D) All are buffer solutions.

Exam 15: Applications of Aqueous Equilibria

0.10 M potassium chromate is slowly added to a solution containing 0.50 M AgNO₃ and 0.50 M Ba(NO₃)₂.What is the Ag⁺ concentration when BaCrO₄ just starts to precipitate? The K_sp for Ag₂CrO₄ and BaCrO₄ are 1.1 × 10^-12 and 1.2 × 10^-10,respectively.

(Multiple Choice)

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Question 141

State whether the solubility of Cu(OH)₂ will increase or decrease upon the addition of aqueous solutions of a)HCl,b)NaOH,c)NH₃.

(Short Answer)

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Question 142

Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer results in a pH = ________? The K_a of formic acid is 1.8 × 10^-4.

(Short Answer)

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Question 143

Which is a net ionic equation for the neutralization reaction of a strong acid with a weak base?

(Multiple Choice)

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Question 144

What is the silver ion concentration for a saturated solution of Ag₂CO₃ if the K_sp for Ag₂CO₃ is 8.4 × 10^-12?

(Multiple Choice)

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Question 145

Which of the following titrations result in an acidic solution at the equivalence point?

(Multiple Choice)

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Question 146

Oxalic acid,H₂C₂O₄ has acid dissociation constants K_a1 = 5.9 × 10^-2 and K_a2 = 6.4 × 10^-5. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H₂C₂O₄?

(Multiple Choice)

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Question 147

The following pictures represent solutions that contain a weak acid HA (pK_a = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent A^- ions.(K⁺,H₃O⁺,OH^-,and solvent H₂O molecules have been omitted for clarity. ) -For which of these solutions is pH = pK_a?

(Multiple Choice)

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Question 148

The artist's pigment cadmium yellow,CdS,has a water solubility of 0.13 g/L.The solubility product of CdS,K_sp = ________.

(Short Answer)

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Question 149

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous hydrofluoric acid requires 30.00 mL of 0.400 M NaOH? K_a = 6.76 × 10^-4 for HF.

(Multiple Choice)

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Question 150

The following pictures represent solutions of AgCl,which may also contain ions other than Ag⁺ and Cl^- which are not shown.Gray spheres represent Ag⁺ ions and dotted spheres represent Cl^- ions. -If solution (1)is a saturated solution of AgCl,which of solutions (1)-(4)represents the solution after a small amount of HCl is added and equilibrium is restored?

(Multiple Choice)

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Question 151

The following pictures represent solutions of CuS,which may also contain ions other than Cu²⁺ and S^2- which are not shown.Gray spheres represent Cu²⁺ ions and dotted spheres represent S^2- ions. -If solution (1)is a saturated solution of CuS,which of solutions (2)-(4)are unsaturated?

(Multiple Choice)

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Question 152

What is the equation relating the equilibrium constant K_n for the neutralization of a weak acid with a weak base to the K_a of the acid,the K_b of the base and K_w?

(Essay)

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Question 153

Use the graphs below to answer the following questions. -What is the characteristic pH-titrant curve for the titration of a strong acid by a strong base?

(Multiple Choice)

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Question 154

Which metal ions can be precipitated out of solution as chlorides?

(Multiple Choice)

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Question 155

The neutralization constant K_n for the neutralization of acetylsalicylic acid (C₉H₈O₄)and codeine (C₁₈H₂₁NO₃)is 4.8 × 10⁴.The acid dissociation constant K_a for acetylsalicylic acid is 3.0 × 10^-4.What is the base dissociation constant K_b for codeine?

(Multiple Choice)

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Question 156

The following plot shows two titration curves,each representing the titration of 50.00 mL of 0.100 M acid with 0.100 M NaOH. -Which point a-d represents a buffer region?

(Multiple Choice)

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Question 157

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH₃CO₂H with 25.00 mL of 0.0 10 M CH₃CO₂Na? Assume that the volume of the solutions are additive and that K_a = 1.8 × 10^-5 for CH₃CO₂H.

(Multiple Choice)

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Question 158

Which metal sulfides can be precipitated from a solution that is 0.01 M in Mn²⁺,Zn²⁺,Pb²⁺ and Cu²⁺ and 0.10 M in H₂S at a pH of 1.0?

(Multiple Choice)

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Question 159

The following pictures represent solutions that contain a weak acid HA (pK_a = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent A^- ions.(K⁺,H₃O⁺,OH^-,and solvent H₂O molecules have been omitted for clarity. ) -Which of these solutions are buffers?

(Multiple Choice)

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Question 160

Showing 141 - 160 of 190

0.10 M potassium chromate is slowly added to a solution containing 0.50 M AgNO₃ and 0.50 M Ba(NO₃)₂.What is the Ag⁺ concentration when BaCrO₄ just starts to precipitate? The K_sp for Ag₂CrO₄ and BaCrO₄ are 1.1 × 10^-12 and 1.2 × 10^-10,respectively.

State whether the solubility of Cu(OH)₂ will increase or decrease upon the addition of aqueous solutions of a)HCl,b)NaOH,c)NH₃.

Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer results in a pH = ________? The K_a of formic acid is 1.8 × 10^-4.

Which is a net ionic equation for the neutralization reaction of a strong acid with a weak base?

What is the silver ion concentration for a saturated solution of Ag₂CO₃ if the K_sp for Ag₂CO₃ is 8.4 × 10^-12?

Which of the following titrations result in an acidic solution at the equivalence point?

Oxalic acid,H₂C₂O₄ has acid dissociation constants K_a1 = 5.9 × 10^-2 and K_a2 = 6.4 × 10^-5. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H₂C₂O₄?

The artist's pigment cadmium yellow,CdS,has a water solubility of 0.13 g/L.The solubility product of CdS,K_sp = ________.

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous hydrofluoric acid requires 30.00 mL of 0.400 M NaOH? K_a = 6.76 × 10^-4 for HF.

The following pictures represent solutions of CuS,which may also contain ions other than Cu²⁺ and S^2- which are not shown.Gray spheres represent Cu²⁺ ions and dotted spheres represent S^2- ions. -If solution (1)is a saturated solution of CuS,which of solutions (2)-(4)are unsaturated?

What is the equation relating the equilibrium constant K_n for the neutralization of a weak acid with a weak base to the K_a of the acid,the K_b of the base and K_w?

Use the graphs below to answer the following questions. -What is the characteristic pH-titrant curve for the titration of a strong acid by a strong base?

Which metal ions can be precipitated out of solution as chlorides?

The neutralization constant K_n for the neutralization of acetylsalicylic acid (C₉H₈O₄)and codeine (C₁₈H₂₁NO₃)is 4.8 × 10⁴.The acid dissociation constant K_a for acetylsalicylic acid is 3.0 × 10^-4.What is the base dissociation constant K_b for codeine?

The following plot shows two titration curves,each representing the titration of 50.00 mL of 0.100 M acid with 0.100 M NaOH. -Which point a-d represents a buffer region?

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH₃CO₂H with 25.00 mL of 0.0 10 M CH₃CO₂Na? Assume that the volume of the solutions are additive and that K_a = 1.8 × 10^-5 for CH₃CO₂H.

Which metal sulfides can be precipitated from a solution that is 0.01 M in Mn²⁺,Zn²⁺,Pb²⁺ and Cu²⁺ and 0.10 M in H₂S at a pH of 1.0?

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Exam 15: Applications of Aqueous Equilibria

0.10 M potassium chromate is slowly added to a solution containing 0.50 M AgNO3 and 0.50 M Ba(NO3)2.What is the Ag+ concentration when BaCrO4 just starts to precipitate? The Ksp for Ag2CrO4 and BaCrO4 are 1.1 × 10-12 and 1.2 × 10-10,respectively.

State whether the solubility of Cu(OH)2 will increase or decrease upon the addition of aqueous solutions of a)HCl,b)NaOH,c)NH3.

Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer results in a pH = ________? The Ka of formic acid is 1.8 × 10-4.

Which is a net ionic equation for the neutralization reaction of a strong acid with a weak base?

What is the silver ion concentration for a saturated solution of Ag2CO3 if the Ksp for Ag2CO3 is 8.4 × 10-12?

Which of the following titrations result in an acidic solution at the equivalence point?

Oxalic acid,H2C2O4 has acid dissociation constants Ka1 = 5.9 × 10-2 and Ka2 = 6.4 × 10-5. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H2C2O4?

The following pictures represent solutions that contain a weak acid HA (pKa = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent A- ions.(K+,H3O+,OH-,and solvent H2O molecules have been omitted for clarity. ) -For which of these solutions is pH = pKa?

The artist's pigment cadmium yellow,CdS,has a water solubility of 0.13 g/L.The solubility product of CdS,Ksp = ________.

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous hydrofluoric acid requires 30.00 mL of 0.400 M NaOH? Ka = 6.76 × 10-4 for HF.

The following pictures represent solutions of CuS,which may also contain ions other than Cu2+ and S2- which are not shown.Gray spheres represent Cu2+ ions and dotted spheres represent S2- ions. -If solution (1)is a saturated solution of CuS,which of solutions (2)-(4)are unsaturated?

What is the equation relating the equilibrium constant Kn for the neutralization of a weak acid with a weak base to the Ka of the acid,the Kb of the base and Kw?

Use the graphs below to answer the following questions. -What is the characteristic pH-titrant curve for the titration of a strong acid by a strong base?

Which metal ions can be precipitated out of solution as chlorides?

The neutralization constant Kn for the neutralization of acetylsalicylic acid (C9H8O4)and codeine (C18H21NO3)is 4.8 × 104.The acid dissociation constant Ka for acetylsalicylic acid is 3.0 × 10-4.What is the base dissociation constant Kb for codeine?

The following plot shows two titration curves,each representing the titration of 50.00 mL of 0.100 M acid with 0.100 M NaOH. -Which point a-d represents a buffer region?

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH3CO2H with 25.00 mL of 0.0 10 M CH3CO2Na? Assume that the volume of the solutions are additive and that Ka = 1.8 × 10-5 for CH3CO2H.

Which metal sulfides can be precipitated from a solution that is 0.01 M in Mn2+,Zn2+,Pb2+ and Cu2+ and 0.10 M in H2S at a pH of 1.0?

The following pictures represent solutions that contain a weak acid HA (pKa = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms and shaded spheres represent A- ions.(K+,H3O+,OH-,and solvent H2O molecules have been omitted for clarity. ) -Which of these solutions are buffers?

Chemistry: Matter and Measurement

Atoms, molecules, and Ions

Formulas, equations, and Moles

Reactions in Aqueous Solutions

Periodicity and the Atomic Structure of Atoms

Ionic Bonds and Some Main-Group Chemistry

Covalent Bonds and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids,solids,and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Thermodynamics: Entropy, free Energy, and Equilibrium

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0.10 M potassium chromate is slowly added to a solution containing 0.50 M AgNO₃ and 0.50 M Ba(NO₃)₂.What is the Ag⁺ concentration when BaCrO₄ just starts to precipitate? The K_sp for Ag₂CrO₄ and BaCrO₄ are 1.1 × 10^-12 and 1.2 × 10^-10,respectively.

State whether the solubility of Cu(OH)₂ will increase or decrease upon the addition of aqueous solutions of a)HCl,b)NaOH,c)NH₃.

Addition of 0.0125 mol HCl to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer results in a pH = ________? The K_a of formic acid is 1.8 × 10^-4.

What is the silver ion concentration for a saturated solution of Ag₂CO₃ if the K_sp for Ag₂CO₃ is 8.4 × 10^-12?

Oxalic acid,H₂C₂O₄ has acid dissociation constants K_a1 = 5.9 × 10^-2 and K_a2 = 6.4 × 10^-5. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H₂C₂O₄?

The artist's pigment cadmium yellow,CdS,has a water solubility of 0.13 g/L.The solubility product of CdS,K_sp = ________.

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous hydrofluoric acid requires 30.00 mL of 0.400 M NaOH? K_a = 6.76 × 10^-4 for HF.

The following pictures represent solutions of CuS,which may also contain ions other than Cu²⁺ and S^2- which are not shown.Gray spheres represent Cu²⁺ ions and dotted spheres represent S^2- ions. -If solution (1)is a saturated solution of CuS,which of solutions (2)-(4)are unsaturated?

What is the equation relating the equilibrium constant K_n for the neutralization of a weak acid with a weak base to the K_a of the acid,the K_b of the base and K_w?

The neutralization constant K_n for the neutralization of acetylsalicylic acid (C₉H₈O₄)and codeine (C₁₈H₂₁NO₃)is 4.8 × 10⁴.The acid dissociation constant K_a for acetylsalicylic acid is 3.0 × 10^-4.What is the base dissociation constant K_b for codeine?

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M CH₃CO₂H with 25.00 mL of 0.0 10 M CH₃CO₂Na? Assume that the volume of the solutions are additive and that K_a = 1.8 × 10^-5 for CH₃CO₂H.

Which metal sulfides can be precipitated from a solution that is 0.01 M in Mn²⁺,Zn²⁺,Pb²⁺ and Cu²⁺ and 0.10 M in H₂S at a pH of 1.0?