Which of the following is a logical inference from the fact that a 0.10 M solution of potassium acetate,KC2H3O2,is less alkaline than a 0.10 M solution of potassium cyanide,KCN?

A) Hydrocyanic acid is a weaker acid than acetic acid. B) Cyanides are less soluble than acetates. C) Hydrocyanic acid is less soluble in water than acetic acid. D) Acetic acid is a weaker acid than hydrocyanic acid. E) 0.10 M potassium acetate is more concentrated than 0.10 M potassium cyanide. A) Hydrocyanic acid is a weaker acid than acetic acid. B) Cyanides are less soluble than acetates. C) Hydrocyanic acid is less soluble in water than acetic acid. D) Acetic acid is a weaker acid than hydrocyanic acid. E) 0.10 M potassium acetate is more concentrated than 0.10 M potassium cyanide.

Determine the pH of 263 ml of an aqueous solution which has [NH4I] = 0.300 M.Kb = 1.74 × 10-5 for NH3(aq).

A) 2.6 B) 11.4 C) 4.9 D) 9.1 E) 4.6 A) 2.6 B) 11.4 C) 4.9 D) 9.1 E) 4.6

Which species in the following reaction acts as a Lewis acid? CuSO4(s)+ 4 NH3(aq)⇌ [Cu(NH3)4]2+(aq)+ SO42-(aq)

A) SO42- B) Cu2+ C) [Cu(NH3)4]2+(aq) D) NH3 E) [Cu(NH3)4]2+(aq)and SO42- A) SO42- B) Cu2+ C) [Cu(NH3)4]2+(aq) D) NH3 E) [Cu(NH3)4]2+(aq)and SO42-

Calculate the pH of a 1.60 mol L-1 CH3NH3Cl solution.Kb for methylamine,CH3NH2,is

A) 1.61 B) 5.18 C) 8.82 D) 12.39 A) 1.61 B) 5.18 C) 8.82 D) 12.39

Calculate the pH of a 0.800 mol L-1 aqueous NaCH3CO2 solution.Ka for acetic acid,CH3CO2H,is

A) 2.42 B) 4.68 C) 9.32 D) 11.58 A) 2.42 B) 4.68 C) 9.32 D) 11.58

Exam 16: Acids and Bases

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Which of the following is a logical inference from the fact that a 0.10 M solution of potassium acetate,KC₂H₃O₂,is less alkaline than a 0.10 M solution of potassium cyanide,KCN?

(Multiple Choice)

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Question 101

Determine the pH of 263 ml of an aqueous solution which has [NH₄I] = 0.300 M.K_b = 1.74 × 10^-5 for NH₃(aq).

(Multiple Choice)

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Question 102

Which species in the following reaction acts as a Lewis acid? CuSO₄(s)+ 4 NH₃(aq)⇌ [Cu(NH₃)_4]²⁺(aq)+ SO₄^2-(aq)

(Multiple Choice)

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Question 103

What is the pH of a 0.375 M aqueous solution of benzoic acid? K_a = 6.3 × 10^-5

(Multiple Choice)

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Question 104

For NaC₂H₃O₂,predict whether the aqueous solution is acidic,basic or neutral and why.

(Multiple Choice)

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Question 105

When dissolved in water,which compound is generally considered to be an Arrhenius acid?

(Multiple Choice)

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Question 106

Which one of the following salts,when dissolved in water,produces the solution with the highest pH?

(Multiple Choice)

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Question 107

At 25 °C,the pH of pure water is:

(Multiple Choice)

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Question 108

H₂SO₄ is a weaker acid than H₂SO₃.

(True/False)

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Question 109

What is the [Cl^-] of a solution prepared by dissolving 0.1824 g of hydrogen chloride in sufficient pure water to prepare 500.0 ml of solution?

(Multiple Choice)

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Question 110

pOH = 3.14 is equivalent to:

(Multiple Choice)

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Question 111

The term pH = -ln [H⁺].

(True/False)

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Question 112

For HI,predict whether the solution is acidic,basic or neutral and why.

(Multiple Choice)

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Question 113

Choose the Br∅nsted-Lowry acids and bases in the following equation: H₂O + NH₂^- ⇌ NH₃ + OH^-

(Multiple Choice)

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Question 114

The acid-dissociation constant of hydrocyanic acid (HCN)at 25.0 °C is 4.9 × .What is the pH of an aqueous solution of 0.080 mol L^-1 sodium cyanide (NaCN)?

(Multiple Choice)

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Question 115

Which indication of relative acid strengths is INCORRECT?

(Multiple Choice)

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Question 116

Calculate the pH of a 1.60 mol L^-1 CH₃NH₃Cl solution.K_b for methylamine,CH₃NH₂,is

(Multiple Choice)

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Question 117

Calculate the pH of a 0.800 mol L^-1 aqueous NaCH₃CO₂ solution.K_a for acetic acid,CH₃CO₂H,is

(Multiple Choice)

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Question 118

A solution has pOH of -0.47.This means that:

(Multiple Choice)

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Question 119

According to the Arrhenius theory,a neutralization reaction involves the combination of an acid with a base to make only water.

(True/False)

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Question 120

Showing 101 - 120 of 137

Exam 16: Acids and Bases

Which of the following is a logical inference from the fact that a 0.10 M solution of potassium acetate,KC2H3O2,is less alkaline than a 0.10 M solution of potassium cyanide,KCN?

Determine the pH of 263 ml of an aqueous solution which has [NH4I] = 0.300 M.Kb = 1.74 × 10-5 for NH3(aq).

Which species in the following reaction acts as a Lewis acid? CuSO4(s)+ 4 NH3(aq)⇌ [Cu(NH3)4]2+(aq)+ SO42-(aq)

What is the pH of a 0.375 M aqueous solution of benzoic acid? Ka = 6.3 × 10-5

For NaC2H3O2,predict whether the aqueous solution is acidic,basic or neutral and why.

When dissolved in water,which compound is generally considered to be an Arrhenius acid?

Which one of the following salts,when dissolved in water,produces the solution with the highest pH?

At 25 °C,the pH of pure water is:

H2SO4 is a weaker acid than H2SO3.

What is the [Cl-] of a solution prepared by dissolving 0.1824 g of hydrogen chloride in sufficient pure water to prepare 500.0 ml of solution?

pOH = 3.14 is equivalent to:

The term pH = -ln [H+].

For HI,predict whether the solution is acidic,basic or neutral and why.

Choose the Br∅nsted-Lowry acids and bases in the following equation: H2O + NH2- ⇌ NH3 + OH-

The acid-dissociation constant of hydrocyanic acid (HCN)at 25.0 °C is 4.9 × .What is the pH of an aqueous solution of 0.080 mol L-1 sodium cyanide (NaCN)?

Which indication of relative acid strengths is INCORRECT?

Calculate the pH of a 1.60 mol L-1 CH3NH3Cl solution.Kb for methylamine,CH3NH2,is

Calculate the pH of a 0.800 mol L-1 aqueous NaCH3CO2 solution.Ka for acetic acid,CH3CO2H,is

A solution has pOH of -0.47.This means that:

According to the Arrhenius theory,a neutralization reaction involves the combination of an acid with a base to make only water.

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Which of the following is a logical inference from the fact that a 0.10 M solution of potassium acetate,KC₂H₃O₂,is less alkaline than a 0.10 M solution of potassium cyanide,KCN?

Determine the pH of 263 ml of an aqueous solution which has [NH₄I] = 0.300 M.K_b = 1.74 × 10^-5 for NH₃(aq).

Which species in the following reaction acts as a Lewis acid? CuSO₄(s)+ 4 NH₃(aq)⇌ [Cu(NH₃)_4]²⁺(aq)+ SO₄^2-(aq)

What is the pH of a 0.375 M aqueous solution of benzoic acid? K_a = 6.3 × 10^-5

For NaC₂H₃O₂,predict whether the aqueous solution is acidic,basic or neutral and why.

H₂SO₄ is a weaker acid than H₂SO₃.

What is the [Cl^-] of a solution prepared by dissolving 0.1824 g of hydrogen chloride in sufficient pure water to prepare 500.0 ml of solution?

The term pH = -ln [H⁺].

Choose the Br∅nsted-Lowry acids and bases in the following equation: H₂O + NH₂^- ⇌ NH₃ + OH^-

The acid-dissociation constant of hydrocyanic acid (HCN)at 25.0 °C is 4.9 × .What is the pH of an aqueous solution of 0.080 mol L^-1 sodium cyanide (NaCN)?

Calculate the pH of a 1.60 mol L^-1 CH₃NH₃Cl solution.K_b for methylamine,CH₃NH₂,is

Calculate the pH of a 0.800 mol L^-1 aqueous NaCH₃CO₂ solution.K_a for acetic acid,CH₃CO₂H,is