What is the percent ionization of nitrous acid in a solution that is 0.222 M in nitrous acid (HNO2)and 0.278 M in potassium nitrite (KNO2)? The acid dissociation constant of nitrous acid is

A) 55.6 B) 15.5 C) 2.78 × D) 3.448 E) 0.162 A) 55.6 B) 15.5 C) 2.78 × D) 3.448 E) 0.162

The Ksp for Cu(OH)2 is 4.8 × 10-20.Determine the molar solubility of Cu(OH)2 in a buffer solution with a pH of 10.1.

A) 6.0 × 10-10 B) 7.6 C) 3.0 × 10-12 D) 2.2 × 10-10 E) 3.8 × 10-16 A) 6.0 × 10-10 B) 7.6 C) 3.0 × 10-12 D) 2.2 × 10-10 E) 3.8 × 10-16

Exam 17: Additional Aspects of Aqueous Equilibria

A 25.0-mL sample of 0.150 M hydrocyanic acid is titrated with a 0.150 M NaOH solution.What is the pH before any base is added? The of hydrocyanic acid is 4.9 × 10^-10.

(Multiple Choice)

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Question 21

For which salt should the aqueous solubility be most sensitive to pH?

(Multiple Choice)

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Question 22

What is the percent ionization of nitrous acid in a solution that is 0.222 M in nitrous acid (HNO₂)and 0.278 M in potassium nitrite (KNO₂)? The acid dissociation constant of nitrous acid is

(Multiple Choice)

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Question 23

Which one of the following is not amphoteric?

(Multiple Choice)

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Question 24

Which one of the following pairs cannot be mixed together to form a buffer solution?

(Multiple Choice)

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Question 25

In a solution,when the concentrations of a weak acid and its conjugate base are equal,________.

(Multiple Choice)

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Question 26

Decreasing the pH of blood will cause hemoglobin to release ________.

(Multiple Choice)

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Question 27

The K_sp for Cu(OH)₂ is 4.8 × 10^-20.Determine the molar solubility of Cu(OH)₂ in a buffer solution with a pH of 10.1.

(Multiple Choice)

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Question 28

AgBr would have the lowest solubility in ________.

(Multiple Choice)

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Question 29

Calculate the pH of a buffer solution that contains 0.010 moles of A^- and 0.010 moles of HA in 100 ml of water.The K_a of HA is 1.77 × 10^-5.

(Short Answer)

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Question 30

A solution is prepared by dissolving 0.23 mol of hypochlorous acid and 0.27 mol of sodium hypochlorite in water sufficient to yield 1.00 L of solution.The addition of 0.05 mol of HCl to this buffer solution causes the pH to drop slightly.The pH does not decrease drastically because the HCl reacts with the ________ present in the buffer solution.The of hypochlorous acid is 1.36 × 10^-3.

(Multiple Choice)

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Question 31

How many milliliters of 0.120 M NaOH are required to titrate 50.0 mL of 0.0998 M hypochlorous acid to the equivalence point? The of hypochlorous acid is 3.0 × 10^-8.

(Multiple Choice)

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Question 32

Calculate the pH of a solution prepared by dissolving of acetic acid and of sodium acetate in water sufficient to yield of solution.The K_a of acetic acid is

(Multiple Choice)

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Question 33

A 25.0 mL sample of an HCl solution is titrated with a NaOH solution.The equivalence point is reached with of base.The concentration of HCl is ________ M.

(Multiple Choice)

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Question 34

Which solution would have the greatest buffering capacity?

(Multiple Choice)

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Question 35

The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 mL of 0.125 M HCl is ________.

(Multiple Choice)

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Question 36

In which one of the following solutions is silver chloride the most soluble?

(Multiple Choice)

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Question 37

The pH of a solution prepared by mixing 45.0 mL of 0.183 M KOH and 35.0 mL of HCl is ________.

(Multiple Choice)

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Question 38

Human blood is considered to be ________.

(Multiple Choice)

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Question 39

Calculate the maximum concentration (in M)of silver ions (Ag⁺)in a solution that contains of CO₃^2-.The K_sp of Ag₂CO₃ is

(Multiple Choice)

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Question 40

Showing 21 - 40 of 116

Exam 17: Additional Aspects of Aqueous Equilibria

A 25.0-mL sample of 0.150 M hydrocyanic acid is titrated with a 0.150 M NaOH solution.What is the pH before any base is added? The of hydrocyanic acid is 4.9 × 10-10.

For which salt should the aqueous solubility be most sensitive to pH?

What is the percent ionization of nitrous acid in a solution that is 0.222 M in nitrous acid (HNO2)and 0.278 M in potassium nitrite (KNO2)? The acid dissociation constant of nitrous acid is

Which one of the following is not amphoteric?

Which one of the following pairs cannot be mixed together to form a buffer solution?

In a solution,when the concentrations of a weak acid and its conjugate base are equal,________.

Decreasing the pH of blood will cause hemoglobin to release ________.

The Ksp for Cu(OH)2 is 4.8 × 10-20.Determine the molar solubility of Cu(OH)2 in a buffer solution with a pH of 10.1.

AgBr would have the lowest solubility in ________.

Calculate the pH of a buffer solution that contains 0.010 moles of A- and 0.010 moles of HA in 100 ml of water.The Ka of HA is 1.77 × 10-5.

How many milliliters of 0.120 M NaOH are required to titrate 50.0 mL of 0.0998 M hypochlorous acid to the equivalence point? The of hypochlorous acid is 3.0 × 10-8.

Calculate the pH of a solution prepared by dissolving of acetic acid and of sodium acetate in water sufficient to yield of solution.The Ka of acetic acid is

A 25.0 mL sample of an HCl solution is titrated with a NaOH solution.The equivalence point is reached with of base.The concentration of HCl is ________ M.

Which solution would have the greatest buffering capacity?

The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 mL of 0.125 M HCl is ________.

In which one of the following solutions is silver chloride the most soluble?

The pH of a solution prepared by mixing 45.0 mL of 0.183 M KOH and 35.0 mL of HCl is ________.

Human blood is considered to be ________.

Calculate the maximum concentration (in M)of silver ions (Ag+)in a solution that contains of CO32-.The Ksp of Ag2CO3 is

Introduction: Matter, energy, and Measurement

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Chemical Reactions and Reaction Stoichiometry

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Periodic Properties of the Elements

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A 25.0-mL sample of 0.150 M hydrocyanic acid is titrated with a 0.150 M NaOH solution.What is the pH before any base is added? The of hydrocyanic acid is 4.9 × 10^-10.

What is the percent ionization of nitrous acid in a solution that is 0.222 M in nitrous acid (HNO₂)and 0.278 M in potassium nitrite (KNO₂)? The acid dissociation constant of nitrous acid is

The K_sp for Cu(OH)₂ is 4.8 × 10^-20.Determine the molar solubility of Cu(OH)₂ in a buffer solution with a pH of 10.1.

Calculate the pH of a buffer solution that contains 0.010 moles of A^- and 0.010 moles of HA in 100 ml of water.The K_a of HA is 1.77 × 10^-5.

How many milliliters of 0.120 M NaOH are required to titrate 50.0 mL of 0.0998 M hypochlorous acid to the equivalence point? The of hypochlorous acid is 3.0 × 10^-8.

Calculate the pH of a solution prepared by dissolving of acetic acid and of sodium acetate in water sufficient to yield of solution.The K_a of acetic acid is

Calculate the maximum concentration (in M)of silver ions (Ag⁺)in a solution that contains of CO₃^2-.The K_sp of Ag₂CO₃ is