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 saturated?

A) (2) B) (3) C) (4) D) None of these A) (2) B) (3) C) (4) D) None of these

The following pictures represent solutions that contain a weak acid HA (pKS1U1B1aS1U1B0 = 5.0)and its potassium salt KA.Unshaded spheres represent H atoms,black spheres represent oxygen atoms,and shaded spheres represent AS1U1P1-S1S1P0 ions.(KS1U1P1+S1S1P0,HS1U1B13S1U1B0OS1U1P1+ S1S1P0initially present,OHS1U1P1- S1S1P0initially present and solvent water molecules have been omitted for clarity. ) -Which picture represents the equilibrium state of the solution after addition of one OH- ion to the solution shown in picture (1)?

A) (2) B) (3) C) (4) D) (5) A) (2) B) (3) C) (4) D) (5)

The following pictures represent solutions at various stages in the titration of a weak diprotic acid HS1U1B12S1U1B0A with aqueous KOH.Unshaded spheres represent H atoms,black spheres represent oxygen atoms,and shaded spheres represent AS1U1P12-S1S1P0 ions.(KS1U1P1+S1S1P0,HS1U1B13S1U1B0OS1U1P1+S1S1P0 initially present,OHS1U1P1-S1S1P0 initially present and solvent water molecules have been omitted for clarity). -Which picture represents the system with the lowest pH?

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

0.10 M potassium chromate is slowly added to a solution containing 0.20 M AgNO3 and 0.20 M Ba(NO3)2.What is the Ag+ concentration when BaCrO4 just starts to precipitate? 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) 4)3 × 10-2 M A) 6)5 × 10-5 M B) 1)3 × 10-4 M C) 3)2 × 10-4 M D) 4)3 × 10-2 M

The following pictures represent solutions at various points in the titration of a weak acid HA with aqueous KOH.Unshaded spheres represent H atoms,black spheres represent oxygen atoms,and shaded spheres represent AS1U1P1-S1S1P0 ions.(KS1U1P1+S1S1P0,HS1U1B13S1U1B0OS1U1P1+S1S1P0 initially present,OHS1U1P1-S1S1P0 initially present and solvent water molecules have been omitted for clarity). -Which picture represents the solution after the equivalence point?

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

What is the molar solubility of lead(II)chromate in 0.10 M HNO3 if the Ksp for PbCrO4 is 2)8 × 10-13? and the Ka2 for H2CrO4 is 3.0 × 10-7? Note that H2CrO4 is considered to be a strong acid.

A) 9)2 × 10-11 M B) 2)9 × 10-10 M C) 9)3 × 10-7 M D) 3)1 × 10-4 M A) 9)2 × 10-11 M B) 2)9 × 10-10 M C) 9)3 × 10-7 M D) 3)1 × 10-4 M

The following pictures represent solutions that contain a weak acid HA and/or 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 solution has the lowest pH?

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

What is the molar solubility of AgCl in 0.10 M NH3? Ksp for AgCl is 1.8 × 10-10 and the Kf for Ag(NH3)2+ is 1.7 × 107.

A) 1)3 × 10-5 M B) 5)0 × 10-3 M C) 5)5 × 10-3 M D) 5)5 × 10-2 M A) 1)3 × 10-5 M B) 5)0 × 10-3 M C) 5)5 × 10-3 M D) 5)5 × 10-2 M

What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M NH3 with 25.00 mL of 0.10 M NH4Cl? Assume that the volume of the solutions are additive and that Kb = 1.8 × 10-5 for NH3.

A) 8)95 B) 9)26 C) 9)56 D) 11.13 A) 8)95 B) 9)26 C) 9)56 D) 11.13

The following pictures represent solutions of CaCOS1U1B13S1U1B0,which may also contain ions other than CaS1U1P12+S1S1P0 and COS1U1B13S1U1B0S1U1P12-S1S1P0 which are not shown.Gray spheres represent CaS1U1P12+S1S1P0 ions and unshaded spheres represent COS1U1B13S1U1B0S1U1P12-S1S1P0 ions. -If solution (1)is a saturated solution of CaCO3,which of solutions (1)-(4)represents the solution after a small amount of HNO3 is added and equilibrium is restored?

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

Exam 15: Applications of Aqueous Equilibria

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 saturated?

(Multiple Choice)

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Question 41

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,black spheres represent oxygen atoms,and shaded spheres represent A^- ions.(K⁺,H₃O⁺initially present,OH^-initially present and solvent water molecules have been omitted for clarity. ) -Which picture represents the equilibrium state of the solution after addition of one OH^- ion to the solution shown in picture (1)?

(Multiple Choice)

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Question 42

The pH of a solution of HIO₃ (K_a = 1.7 × 10^-1)and KIO₃ is 1.00.What is the molarity of KIO₃ if the molarity of HIO₃ is 0.025 M?

(Short Answer)

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Question 43

The equivalence point pH of the titration of four weak bases is given.Which is the strongest base?

(Multiple Choice)

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Question 44

The following pictures represent solutions at various stages in the titration of a weak diprotic acid H₂A with aqueous KOH.Unshaded spheres represent H atoms,black spheres represent oxygen atoms,and shaded spheres represent A^2- ions.(K⁺,H₃O⁺ initially present,OH^- initially present and solvent water molecules have been omitted for clarity). -Which picture represents the system with the lowest pH?

(Multiple Choice)

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Question 45

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

(Multiple Choice)

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Question 46

Formic acid (HCO₂H,K_a = 1.8 × 10^-4)is the principal component in the venom of stinging ants.What is the molarity of a formic acid solution if 25.00 mL of the formic acid solution requires 29.80 mL of 0.0567 M NaOH to reach the equivalence point?

(Multiple Choice)

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Question 47

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 50.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.K_a = 1.8 × 10^-5for CH₃CO₂H.

(Multiple Choice)

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Question 48

0.10 M potassium chromate is slowly added to a solution containing 0.20 M AgNO₃ and 0.20 M Ba(NO₃)₂.What is the Ag⁺ concentration when BaCrO₄ just starts to precipitate? K_sp for Ag₂CrO₄ and BaCrO₄ are 1.1 × 10^-12 and 1.2 × 10^-10,respectively.

(Multiple Choice)

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Question 49

Addition of 0.0125 mol KOH 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 50

The following pictures represent solutions at various points in the titration of a weak acid HA with aqueous KOH.Unshaded spheres represent H atoms,black spheres represent oxygen atoms,and shaded spheres represent A^- ions.(K⁺,H₃O⁺ initially present,OH^- initially present and solvent water molecules have been omitted for clarity). -Which picture represents the solution after the equivalence point?

(Multiple Choice)

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Question 51

What is the molar solubility of lead(II)chromate in 0.10 M HNO₃ if the K_sp for PbCrO₄ is 2)8 × 10^-13? and the K_a2 for H₂CrO₄ is 3.0 × 10^-7? Note that H₂CrO₄ is considered to be a strong acid.

(Multiple Choice)

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Question 52

What is the pH of a solution made by mixing 25.00 mL of 0.100 M HCl with 40.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.

(Multiple Choice)

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Question 53

The following pictures represent solutions that contain a weak acid HA and/or 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 solution has the lowest pH?

(Multiple Choice)

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Question 54

What is the pH of a solution made by mixing 30.00 mL of 0.10 M HCl with 40.00 mL of 0.10 M KOH? Assume that the volumes of the solutions are additive.

(Multiple Choice)

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Question 55

What is the molar solubility of AgCl in 0.10 M NH₃? K_sp for AgCl is 1.8 × 10^-10 and the K_f for Ag(NH₃)₂⁺ is 1.7 × 10^7.

(Multiple Choice)

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Question 56

What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M NH₃ with 25.00 mL of 0.10 M NH₄Cl? Assume that the volume of the solutions are additive and that K_b = 1.8 × 10^-5 for NH₃.

(Multiple Choice)

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Question 57

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 the equivalence point for the titration of a weak acid?

(Multiple Choice)

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Question 58

The pH of a solution of ethylamine,C₂H₅NH₂ (K_b = 6.4 × 10^-4)and ethylammium bromide,C₂H₅NH₃Br is 11.00.What is the molarity of C₂H₅NH₃Br if the molarity of C₂H₅NH₂is 0.025 M?

(Short Answer)

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Question 59

The following pictures represent solutions of CaCO₃,which may also contain ions other than Ca²⁺ and CO₃^2- which are not shown.Gray spheres represent Ca²⁺ ions and unshaded spheres represent CO₃^2- ions. -If solution (1)is a saturated solution of CaCO₃,which of solutions (1)-(4)represents the solution after a small amount of HNO₃ is added and equilibrium is restored?

(Multiple Choice)

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Question 60

Showing 41 - 60 of 190

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 saturated?

The pH of a solution of HIO₃ (K_a = 1.7 × 10^-1)and KIO₃ is 1.00.What is the molarity of KIO₃ if the molarity of HIO₃ is 0.025 M?

The equivalence point pH of the titration of four weak bases is given.Which is the strongest base?

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

Formic acid (HCO₂H,K_a = 1.8 × 10^-4)is the principal component in the venom of stinging ants.What is the molarity of a formic acid solution if 25.00 mL of the formic acid solution requires 29.80 mL of 0.0567 M NaOH to reach the equivalence point?

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 50.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.K_a = 1.8 × 10^-5for CH₃CO₂H.

0.10 M potassium chromate is slowly added to a solution containing 0.20 M AgNO₃ and 0.20 M Ba(NO₃)₂.What is the Ag⁺ concentration when BaCrO₄ just starts to precipitate? K_sp for Ag₂CrO₄ and BaCrO₄ are 1.1 × 10^-12 and 1.2 × 10^-10,respectively.

Addition of 0.0125 mol KOH 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 molar solubility of lead(II)chromate in 0.10 M HNO₃ if the K_sp for PbCrO₄ is 2)8 × 10^-13? and the K_a2 for H₂CrO₄ is 3.0 × 10^-7? Note that H₂CrO₄ is considered to be a strong acid.

What is the pH of a solution made by mixing 25.00 mL of 0.100 M HCl with 40.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.

The following pictures represent solutions that contain a weak acid HA and/or 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 solution has the lowest pH?

What is the pH of a solution made by mixing 30.00 mL of 0.10 M HCl with 40.00 mL of 0.10 M KOH? Assume that the volumes of the solutions are additive.

What is the molar solubility of AgCl in 0.10 M NH₃? K_sp for AgCl is 1.8 × 10^-10 and the K_f for Ag(NH₃)₂⁺ is 1.7 × 10^7.

What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M NH₃ with 25.00 mL of 0.10 M NH₄Cl? Assume that the volume of the solutions are additive and that K_b = 1.8 × 10^-5 for NH₃.

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 the equivalence point for the titration of a weak acid?

The pH of a solution of ethylamine,C₂H₅NH₂ (K_b = 6.4 × 10^-4)and ethylammium bromide,C₂H₅NH₃Br is 11.00.What is the molarity of C₂H₅NH₃Br if the molarity of C₂H₅NH₂is 0.025 M?

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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The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

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Organic and Biological Chemistry

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Exam 15: Applications of Aqueous Equilibria

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 saturated?

The pH of a solution of HIO3 (Ka = 1.7 × 10-1)and KIO3 is 1.00.What is the molarity of KIO3 if the molarity of HIO3 is 0.025 M?

The equivalence point pH of the titration of four weak bases is given.Which is the strongest base?

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

Formic acid (HCO2H,Ka = 1.8 × 10-4)is the principal component in the venom of stinging ants.What is the molarity of a formic acid solution if 25.00 mL of the formic acid solution requires 29.80 mL of 0.0567 M NaOH to reach the equivalence point?

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 50.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.Ka = 1.8 × 10-5 for CH3CO2H.

0.10 M potassium chromate is slowly added to a solution containing 0.20 M AgNO3 and 0.20 M Ba(NO3)2.What is the Ag+ concentration when BaCrO4 just starts to precipitate? Ksp for Ag2CrO4 and BaCrO4 are 1.1 × 10-12 and 1.2 × 10-10,respectively.

Addition of 0.0125 mol KOH 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.

What is the molar solubility of lead(II)chromate in 0.10 M HNO3 if the Ksp for PbCrO4 is 2)8 × 10-13? and the Ka2 for H2CrO4 is 3.0 × 10-7? Note that H2CrO4 is considered to be a strong acid.

What is the pH of a solution made by mixing 25.00 mL of 0.100 M HCl with 40.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.

The following pictures represent solutions that contain a weak acid HA and/or 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 solution has the lowest pH?

What is the pH of a solution made by mixing 30.00 mL of 0.10 M HCl with 40.00 mL of 0.10 M KOH? Assume that the volumes of the solutions are additive.

What is the molar solubility of AgCl in 0.10 M NH3? Ksp for AgCl is 1.8 × 10-10 and the Kf for Ag(NH3)2+ is 1.7 × 107.

What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M NH3 with 25.00 mL of 0.10 M NH4Cl? Assume that the volume of the solutions are additive and that Kb = 1.8 × 10-5 for NH3.

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 the equivalence point for the titration of a weak acid?

The pH of a solution of ethylamine,C2H5NH2 (Kb = 6.4 × 10-4)and ethylammium bromide,C2H5NH3Br is 11.00.What is the molarity of C2H5NH3Br if the molarity of C2H5NH2 is 0.025 M?

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

Electrochemistry

Hydrogen, oxygen, and Water

The Main-Group Elements

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

Nuclear Chemistry

Organic and Biological Chemistry

Filters

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 saturated?

The pH of a solution of HIO₃ (K_a = 1.7 × 10^-1)and KIO₃ is 1.00.What is the molarity of KIO₃ if the molarity of HIO₃ is 0.025 M?

Formic acid (HCO₂H,K_a = 1.8 × 10^-4)is the principal component in the venom of stinging ants.What is the molarity of a formic acid solution if 25.00 mL of the formic acid solution requires 29.80 mL of 0.0567 M NaOH to reach the equivalence point?

What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 50.00 mL of 0.100 M KOH? Assume that the volumes of the solutions are additive.K_a = 1.8 × 10^-5for CH₃CO₂H.

0.10 M potassium chromate is slowly added to a solution containing 0.20 M AgNO₃ and 0.20 M Ba(NO₃)₂.What is the Ag⁺ concentration when BaCrO₄ just starts to precipitate? K_sp for Ag₂CrO₄ and BaCrO₄ are 1.1 × 10^-12 and 1.2 × 10^-10,respectively.

Addition of 0.0125 mol KOH 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 molar solubility of lead(II)chromate in 0.10 M HNO₃ if the K_sp for PbCrO₄ is 2)8 × 10^-13? and the K_a2 for H₂CrO₄ is 3.0 × 10^-7? Note that H₂CrO₄ is considered to be a strong acid.

The following pictures represent solutions that contain a weak acid HA and/or 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 solution has the lowest pH?

What is the molar solubility of AgCl in 0.10 M NH₃? K_sp for AgCl is 1.8 × 10^-10 and the K_f for Ag(NH₃)₂⁺ is 1.7 × 10^7.

What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M NH₃ with 25.00 mL of 0.10 M NH₄Cl? Assume that the volume of the solutions are additive and that K_b = 1.8 × 10^-5 for NH₃.

The pH of a solution of ethylamine,C₂H₅NH₂ (K_b = 6.4 × 10^-4)and ethylammium bromide,C₂H₅NH₃Br is 11.00.What is the molarity of C₂H₅NH₃Br if the molarity of C₂H₅NH₂is 0.025 M?