A 25.0 mL sample of 0.723 M HClO4 is titrated with a 0.273 M KOH solution. The H3O+ concentration after the addition of 60.0 mL of KOH is __________ M.

A) 0.0181 B) 0.430 C) 0.0200 D) 0.273 E) none of the above A) 0.0181 B) 0.430 C) 0.0200 D) 0.273 E) none of the above C

Calculate the pH of a solution that is 0.210 M in nitrous acid (HNO2)and 0.290 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 × 10-4.

A) 3.487 B) 3.210 C) 13.86 D) 10.51 E) 4.562 A) 3.487 B) 3.210 C) 13.86 D) 10.51 E) 4.562

The pH of a solution prepared by dissolving 0.350 mol of solid dimethylamine hydrochloride ((CH3)2NH2Cl)in 1.00 L of 1.10 M dimethylamine ((CH3)2NH)is __________. The Kb for methylamine is 5.40 × 10-4. (Assume the final volume is 1.00 L.)

A) 1.66 B) 2.77 C) 11.23 D) 11.14 E) none of the above A) 1.66 B) 2.77 C) 11.23 D) 11.14 E) none of the above

What is the molar solubility of silver sulfate (Ag2SO4)in water? The solubility-product constant for Ag2SO4 is 1.5 × 10-5 at 25°C.

A) 1.9 × 10-3 B) 2.5 × 10-2 C) 5.5 × 10-3 D) 1.6 × 10-2 E) 5.0 × 10-6 A) 1.9 × 10-3 B) 2.5 × 10-2 C) 5.5 × 10-3 D) 1.6 × 10-2 E) 5.0 × 10-6

Exam 17: Additional Aspects of Aqueous Equilibria

A 25.0 mL sample of 0.723 M HClO₄ is titrated with a 0.273 M KOH solution. The H₃O⁺ concentration after the addition of 60.0 mL of KOH is __________ M.

Free

(Multiple Choice)

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Question 1

Correct Answer:

Verified

Of the following solutions, which has the greatest buffering capacity?

Free

(Multiple Choice)

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Question 2

Correct Answer:

Verified

Suppose you have just added 100.0 ml of a solution containing 0.5000 moles of acetic acid per liter to 400.0 ml of 0.5000 M NaOH. What is the final pH? The K_a of acetic acid is 1.77 × 10^-5.

Free

(Short Answer)

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Question 3

Correct Answer:

Verified

13.48

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

(Multiple Choice)

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Question 4

Calculate the pH of a solution prepared by dissolving 0.150 mol of acetic acid and 0.300 mol of sodium acetate in water sufficient to yield 1.00 L of solution. The K_a of acetic acid is 1.76 × 10^-5.

(Multiple Choice)

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Question 5

Of the following solutions, which has the greatest buffering capacity?

(Multiple Choice)

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Question 6

Calculate the pH of a solution that is 0.210 M in nitrous acid (HNO₂)and 0.290 M in potassium nitrite (KNO₂). The acid dissociation constant of nitrous acid is 4.50 × 10^-4.

(Multiple Choice)

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Question 7

A 25.0 mL sample of 0.150 M hypochlorous acid is titrated with a 0.150 M NaOH solution. What is the pH after 26.0 mL of base is added? The K_a of hypochlorous acid is 3.0 × 10^-8.

(Multiple Choice)

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Question 8

In which of the following aqueous solutions would you expect CuBr to have the highest solubility?

(Multiple Choice)

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Question 9

The concentration of fluoride ions in a saturated solution of barium fluoride is __________ M. The solubility product constant of BaF₂ is 1.7 × 10^-6.

(Multiple Choice)

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Question 10

The pH of a solution prepared by dissolving 0.350 mol of solid dimethylamine hydrochloride ((CH₃)₂NH₂Cl)in 1.00 L of 1.10 M dimethylamine ((CH₃)₂NH)is __________. The K_b for methylamine is 5.40 × 10^-4. (Assume the final volume is 1.00 L.)

(Multiple Choice)

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Question 11

The K_b of ammonia is 1.76 × 10^-5. The pH of a buffer prepared by combining 50.0 mL of 1.00 M ammonia and 50.0 mL of 1.00 M ammonium nitrate is __________.

(Multiple Choice)

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Question 12

A solution containing which one of the following pairs of substances will be a buffer solution?

(Multiple Choice)

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Question 13

Why does fluoride treatment render teeth more resistant to decay?

(Multiple Choice)

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Question 14

The addition of hydrofluoric acid and __________ to water produces a buffer solution.

(Multiple Choice)

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Question 15

Calculate the percent ionization of formic acid (HCO₂H)in a solution that is 0.311 M in formic acid and 0.189 M in sodium formate (NaHCO₂). The K_a of formic acid is 1.77 × 10^-4.

(Multiple Choice)

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Question 16

The pH of a solution that contains 0.818 M acetic acid (K_a = 1.76 × 10^-5)and 0.182 M sodium acetate is __________.

(Multiple Choice)

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Question 17

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

(Multiple Choice)

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Question 18

Human blood is __________.

(Multiple Choice)

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Question 19

What is the molar solubility of silver sulfate (Ag₂SO₄)in water? The solubility-product constant for Ag₂SO₄ is 1.5 × 10^-5 at 25°C.

(Multiple Choice)

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Question 20

Showing 1 - 20 of 111

Exam 17: Additional Aspects of Aqueous Equilibria

A 25.0 mL sample of 0.723 M HClO4 is titrated with a 0.273 M KOH solution. The H3O+ concentration after the addition of 60.0 mL of KOH is __________ M.

Of the following solutions, which has the greatest buffering capacity?

Suppose you have just added 100.0 ml of a solution containing 0.5000 moles of acetic acid per liter to 400.0 ml of 0.5000 M NaOH. What is the final pH? The Ka of acetic acid is 1.77 × 10-5.

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

Calculate the pH of a solution prepared by dissolving 0.150 mol of acetic acid and 0.300 mol of sodium acetate in water sufficient to yield 1.00 L of solution. The Ka of acetic acid is 1.76 × 10-5.

Of the following solutions, which has the greatest buffering capacity?

Calculate the pH of a solution that is 0.210 M in nitrous acid (HNO2)and 0.290 M in potassium nitrite (KNO2). The acid dissociation constant of nitrous acid is 4.50 × 10-4.

A 25.0 mL sample of 0.150 M hypochlorous acid is titrated with a 0.150 M NaOH solution. What is the pH after 26.0 mL of base is added? The Ka of hypochlorous acid is 3.0 × 10-8.

In which of the following aqueous solutions would you expect CuBr to have the highest solubility?

The concentration of fluoride ions in a saturated solution of barium fluoride is __________ M. The solubility product constant of BaF2 is 1.7 × 10-6.

The pH of a solution prepared by dissolving 0.350 mol of solid dimethylamine hydrochloride ((CH3)2NH2Cl)in 1.00 L of 1.10 M dimethylamine ((CH3)2NH)is __________. The Kb for methylamine is 5.40 × 10-4. (Assume the final volume is 1.00 L.)

The Kb of ammonia is 1.76 × 10-5. The pH of a buffer prepared by combining 50.0 mL of 1.00 M ammonia and 50.0 mL of 1.00 M ammonium nitrate is __________.

A solution containing which one of the following pairs of substances will be a buffer solution?

Why does fluoride treatment render teeth more resistant to decay?

The addition of hydrofluoric acid and __________ to water produces a buffer solution.

Calculate the percent ionization of formic acid (HCO2H)in a solution that is 0.311 M in formic acid and 0.189 M in sodium formate (NaHCO2). The Ka of formic acid is 1.77 × 10-4.

The pH of a solution that contains 0.818 M acetic acid (Ka = 1.76 × 10-5)and 0.182 M sodium acetate is __________.

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

Human blood is __________.

What is the molar solubility of silver sulfate (Ag2SO4)in water? The solubility-product constant for Ag2SO4 is 1.5 × 10-5 at 25°C.

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A 25.0 mL sample of 0.723 M HClO₄ is titrated with a 0.273 M KOH solution. The H₃O⁺ concentration after the addition of 60.0 mL of KOH is __________ M.

Suppose you have just added 100.0 ml of a solution containing 0.5000 moles of acetic acid per liter to 400.0 ml of 0.5000 M NaOH. What is the final pH? The K_a of acetic acid is 1.77 × 10^-5.

Calculate the pH of a solution prepared by dissolving 0.150 mol of acetic acid and 0.300 mol of sodium acetate in water sufficient to yield 1.00 L of solution. The K_a of acetic acid is 1.76 × 10^-5.

Calculate the pH of a solution that is 0.210 M in nitrous acid (HNO₂)and 0.290 M in potassium nitrite (KNO₂). The acid dissociation constant of nitrous acid is 4.50 × 10^-4.

A 25.0 mL sample of 0.150 M hypochlorous acid is titrated with a 0.150 M NaOH solution. What is the pH after 26.0 mL of base is added? The K_a of hypochlorous acid is 3.0 × 10^-8.

The concentration of fluoride ions in a saturated solution of barium fluoride is __________ M. The solubility product constant of BaF₂ is 1.7 × 10^-6.

The pH of a solution prepared by dissolving 0.350 mol of solid dimethylamine hydrochloride ((CH₃)₂NH₂Cl)in 1.00 L of 1.10 M dimethylamine ((CH₃)₂NH)is __________. The K_b for methylamine is 5.40 × 10^-4. (Assume the final volume is 1.00 L.)

The K_b of ammonia is 1.76 × 10^-5. The pH of a buffer prepared by combining 50.0 mL of 1.00 M ammonia and 50.0 mL of 1.00 M ammonium nitrate is __________.

Calculate the percent ionization of formic acid (HCO₂H)in a solution that is 0.311 M in formic acid and 0.189 M in sodium formate (NaHCO₂). The K_a of formic acid is 1.77 × 10^-4.

The pH of a solution that contains 0.818 M acetic acid (K_a = 1.76 × 10^-5)and 0.182 M sodium acetate is __________.

What is the molar solubility of silver sulfate (Ag₂SO₄)in water? The solubility-product constant for Ag₂SO₄ is 1.5 × 10^-5 at 25°C.