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 HNO3 is added and equilibrium is restored?

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

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 greatest buffer capacity?

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

What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and 25.00 mL of 12 M NH3 in enough water to make 1.000 L of solution? Kb = 1.80 × 10-5 for NH3.

A) 9)08 B) 9)26 C) 9)43 D) 11.32 A) 9)08 B) 9)26 C) 9)43 D) 11.32

In which of the following solutions would solid PbCl2 be expected to be the least soluble at 25°C?

A) 0)1 M HCl B) 0)1 M NaCl C) 0)1 M CaCl2 D) 0)1 M KNO3 A) 0)1 M HCl B) 0)1 M NaCl C) 0)1 M CaCl2 D) 0)1 M KNO3

What is the molar solubility of AgCl in 0.10 M NaCN if the colorless complex ion Ag(CN)2- forms? Ksp for AgCl is 1.8 × 10-10 and Kf for Ag(CN)2- is

A) 0)050 M B) 0)10 M C) 0)20 M D) 0)40 M A) 0)050 M B) 0)10 M C) 0)20 M D) 0)40 M

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 NaOH 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 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 K2CO3 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

What is the magnitude of the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH₃CO₂H and 0.100 M NaCH₃CO₂? The K_a for acetic acid is1.8 × 10^-5.

Free

(Multiple Choice)

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Question 1

Correct Answer:

Verified

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 HNO₃ is added and equilibrium is restored?

Free

(Multiple Choice)

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Question 2

Correct Answer:

Verified

Selenous acid,H₂SeO₃ has acid dissociation constants K_a1 = 3.5 × 10^-2 and K_a2 = 5 × 10^-8.When 25.00 mL of 0.100 M selenous acid is titrated with 0.200 M NaOH the first equivalence point occurs at pH = ________.

Free

(Short Answer)

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(44)

Question 3

Correct Answer:

Verified

4.2

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 greatest buffer capacity?

(Multiple Choice)

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Question 4

The half equivalence point in the titration of 0.100 M CH₃NH₂ (K_b = 3.7 × 10^-4)with 0.250 M HCl occurs at pH = ________.

(Short Answer)

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Question 5

Precipitation of an ionic compound will occur upon mixing of desired reagents if the initial ion product is ________.

(Multiple Choice)

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Question 6

What is the pH of a buffer system prepared by dissolving 10.70 grams of NH₄Cl and 25.00 mL of 12 M NH₃ in enough water to make 1.000 L of solution? K_b = 1.80 × 10^-5for NH₃.

(Multiple Choice)

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Question 7

In which of the following solutions would solid PbCl₂ be expected to be the least soluble at 25°C?

(Multiple Choice)

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Question 8

What is the molar solubility of AgCl in 0.10 M NaCN if the colorless complex ion Ag(CN)₂^- forms? K_sp for AgCl is 1.8 × 10^-10 and K_f for Ag(CN)₂^- is

(Multiple Choice)

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Question 9

A buffer solution is prepared by dissolving 27.22 g of KH₂PO₄ and 3.37 g of KOH in enough water to make 0.100 L of solution.What is the pH of the H₂PO₄^-/HPO₄^2- buffer if the K_a2 = 6.2 × 10^-8?

(Multiple Choice)

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Question 10

The balanced net ionic equation for the neutralization reaction involving equal molar amounts of HNO₃ and KOH is ________.

(Short Answer)

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Question 11

What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of 0.100 M potassium hydrogen phthalate? The K_a2 for potassium hydrogen phthalate is 3.1 × 10^-6.

(Multiple Choice)

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Question 12

Which of the following combinations of chemicals could be used to make a buffer solution?

(Multiple Choice)

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Question 13

The pH of a 0.150 M formic acid/0.250 M sodium formate buffer = ________? The K_a of formic acid is 1.8 × 10^-4.

(Short Answer)

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Question 14

What is the percent dissociation of acetic acid if the solution has a pH = 4.74 and a pK_a = 4.74?

(Multiple Choice)

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Question 15

What is the pH of the solution formed when 25 mL of 0.173 M NaOH is added to 35 mL of 0.342 M HCl?

(Short Answer)

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Question 16

Which of these neutralization reactions has a pH = 7 when equal molar amounts of acid and base are mixed?

(Multiple Choice)

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Question 17

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 NaOH is added and equilibrium is restored?

(Multiple Choice)

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Question 18

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 K₂CO₃ is added and equilibrium is restored?

(Multiple Choice)

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Question 19

Calculate the solubility (in g/L)of silver chromate in water at 25°C if the K_sp for Ag₂CrO₄ is 1)1 × 10^-12.

(Multiple Choice)

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Question 20

Showing 1 - 20 of 190

What is the magnitude of the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH₃CO₂H and 0.100 M NaCH₃CO₂? The K_a for acetic acid is1.8 × 10^-5.

Selenous acid,H₂SeO₃ has acid dissociation constants K_a1 = 3.5 × 10^-2 and K_a2 = 5 × 10^-8.When 25.00 mL of 0.100 M selenous acid is titrated with 0.200 M NaOH the first equivalence point occurs at pH = ________.

The half equivalence point in the titration of 0.100 M CH₃NH₂ (K_b = 3.7 × 10^-4)with 0.250 M HCl occurs at pH = ________.

Precipitation of an ionic compound will occur upon mixing of desired reagents if the initial ion product is ________.

What is the pH of a buffer system prepared by dissolving 10.70 grams of NH₄Cl and 25.00 mL of 12 M NH₃ in enough water to make 1.000 L of solution? K_b = 1.80 × 10^-5for NH₃.

In which of the following solutions would solid PbCl₂ be expected to be the least soluble at 25°C?

What is the molar solubility of AgCl in 0.10 M NaCN if the colorless complex ion Ag(CN)₂^- forms? K_sp for AgCl is 1.8 × 10^-10 and K_f for Ag(CN)₂^- is

A buffer solution is prepared by dissolving 27.22 g of KH₂PO₄ and 3.37 g of KOH in enough water to make 0.100 L of solution.What is the pH of the H₂PO₄^-/HPO₄^2- buffer if the K_a2 = 6.2 × 10^-8?

The balanced net ionic equation for the neutralization reaction involving equal molar amounts of HNO₃ and KOH is ________.

What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of 0.100 M potassium hydrogen phthalate? The K_a2 for potassium hydrogen phthalate is 3.1 × 10^-6.

Which of the following combinations of chemicals could be used to make a buffer solution?

The pH of a 0.150 M formic acid/0.250 M sodium formate buffer = ________? The K_a of formic acid is 1.8 × 10^-4.

What is the percent dissociation of acetic acid if the solution has a pH = 4.74 and a pK_a = 4.74?

What is the pH of the solution formed when 25 mL of 0.173 M NaOH is added to 35 mL of 0.342 M HCl?

Which of these neutralization reactions has a pH = 7 when equal molar amounts of acid and base are mixed?

Calculate the solubility (in g/L)of silver chromate in water at 25°C if the K_sp for Ag₂CrO₄ is 1)1 × 10^-12.

Chemistry: Matter and Measurement

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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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Exam 15: Applications of Aqueous Equilibria

What is the magnitude of the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is1.8 × 10-5.

Selenous acid,H2SeO3 has acid dissociation constants Ka1 = 3.5 × 10-2 and Ka2 = 5 × 10-8.When 25.00 mL of 0.100 M selenous acid is titrated with 0.200 M NaOH the first equivalence point occurs at pH = ________.

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 greatest buffer capacity?

The half equivalence point in the titration of 0.100 M CH3NH2 (Kb = 3.7 × 10-4)with 0.250 M HCl occurs at pH = ________.

Precipitation of an ionic compound will occur upon mixing of desired reagents if the initial ion product is ________.

What is the pH of a buffer system prepared by dissolving 10.70 grams of NH4Cl and 25.00 mL of 12 M NH3 in enough water to make 1.000 L of solution? Kb = 1.80 × 10-5 for NH3.

In which of the following solutions would solid PbCl2 be expected to be the least soluble at 25°C?

What is the molar solubility of AgCl in 0.10 M NaCN if the colorless complex ion Ag(CN)2- forms? Ksp for AgCl is 1.8 × 10-10 and Kf for Ag(CN)2- is

A buffer solution is prepared by dissolving 27.22 g of KH2PO4 and 3.37 g of KOH in enough water to make 0.100 L of solution.What is the pH of the H2PO4-/HPO42- buffer if the Ka2 = 6.2 × 10-8?

The balanced net ionic equation for the neutralization reaction involving equal molar amounts of HNO3 and KOH is ________.

What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of 0.100 M potassium hydrogen phthalate? The Ka2 for potassium hydrogen phthalate is 3.1 × 10-6.

Which of the following combinations of chemicals could be used to make a buffer solution?

The pH of a 0.150 M formic acid/0.250 M sodium formate buffer = ________? The Ka of formic acid is 1.8 × 10-4.

What is the percent dissociation of acetic acid if the solution has a pH = 4.74 and a pKa = 4.74?

What is the pH of the solution formed when 25 mL of 0.173 M NaOH is added to 35 mL of 0.342 M HCl?

Which of these neutralization reactions has a pH = 7 when equal molar amounts of acid and base are mixed?

Calculate the solubility (in g/L)of silver chromate in water at 25°C if the Ksp for Ag2CrO4 is 1)1 × 10-12.

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

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What is the magnitude of the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH₃CO₂H and 0.100 M NaCH₃CO₂? The K_a for acetic acid is1.8 × 10^-5.

Selenous acid,H₂SeO₃ has acid dissociation constants K_a1 = 3.5 × 10^-2 and K_a2 = 5 × 10^-8.When 25.00 mL of 0.100 M selenous acid is titrated with 0.200 M NaOH the first equivalence point occurs at pH = ________.

The half equivalence point in the titration of 0.100 M CH₃NH₂ (K_b = 3.7 × 10^-4)with 0.250 M HCl occurs at pH = ________.

What is the pH of a buffer system prepared by dissolving 10.70 grams of NH₄Cl and 25.00 mL of 12 M NH₃ in enough water to make 1.000 L of solution? K_b = 1.80 × 10^-5for NH₃.

In which of the following solutions would solid PbCl₂ be expected to be the least soluble at 25°C?

What is the molar solubility of AgCl in 0.10 M NaCN if the colorless complex ion Ag(CN)₂^- forms? K_sp for AgCl is 1.8 × 10^-10 and K_f for Ag(CN)₂^- is

A buffer solution is prepared by dissolving 27.22 g of KH₂PO₄ and 3.37 g of KOH in enough water to make 0.100 L of solution.What is the pH of the H₂PO₄^-/HPO₄^2- buffer if the K_a2 = 6.2 × 10^-8?

The balanced net ionic equation for the neutralization reaction involving equal molar amounts of HNO₃ and KOH is ________.

What volume of 0.100 M NaOH is needed to make 100.0 mL of a buffer solution with a pH of 6.00 if one starts with 50.0 mL of 0.100 M potassium hydrogen phthalate? The K_a2 for potassium hydrogen phthalate is 3.1 × 10^-6.

The pH of a 0.150 M formic acid/0.250 M sodium formate buffer = ________? The K_a of formic acid is 1.8 × 10^-4.

What is the percent dissociation of acetic acid if the solution has a pH = 4.74 and a pK_a = 4.74?

Calculate the solubility (in g/L)of silver chromate in water at 25°C if the K_sp for Ag₂CrO₄ is 1)1 × 10^-12.