Question 1

Classify the following compounds as weak acids (W)or strong acids (S): benzoic acid nitric acid acetic acid

Accepted Answer

A) W W W 
B) S S S 
C) S W W 
D) W S S 
E) W S W 
A) W W W 
B) S S S 
C) S W W 
D) W S S 
E) W S W

Question 2

Determine the pH of a 0.35 M aqueous solution of KF. For hydrofluoric acid, Ka = 7.0 × 10-4.

Accepted Answer

A) 0.46 
B) 5.65 
C) 8.35 
D) 5.01 
E) 1.35 
A) 0.46 
B) 5.65 
C) 8.35 
D) 5.01 
E) 1.35

Question 3

An aqueous solution contains 0.100 M NaOH at 25.0°C. The pH of the solution is __________.

Accepted Answer

A) 0.100 
B) 1.00 
C) 13.00 
D) 7.00 
E) -1.00 
A) 0.100 
B) 1.00 
C) 13.00 
D) 7.00 
E) -1.00

Question 4

What is the conjugate acid of NH3?

Accepted Answer

A) NH3 
B) NH2+ 
C) NH3+ 
D) NH4+ 
E) NH4OH 
A) NH3 
B) NH2+ 
C) NH3+ 
D) NH4+ 
E) NH4OH

Question 5

The molar concentration of hydroxide ion in pure water at 25°C is __________.

Accepted Answer

A) 1.00 
B) 0.00 
C) 1.0 ×10-14 
D) 1.0 × 10-7 
E) 7.00 
A) 1.00 
B) 0.00 
C) 1.0 ×10-14 
D) 1.0 × 10-7 
E) 7.00

Question 6

Which one of the following is a BrØnsted -Lowry acid?

Accepted Answer

A) (CH3)3NH+ 
B) CH3COOH 
C) HF 
D) HNO2 
E) all of the above 
A) (CH3)3NH+ 
B) CH3COOH 
C) HF 
D) HNO2 
E) all of the above

Question 7

Which one of the following is the weakest acid?

Accepted Answer

A) HF (Ka = 6.8 × 10-4) 
B) HClO (Ka = 3.0 × 10-8) 
C) HNO2 (Ka = 4.5 × 10-4) 
D) HCN (Ka = 4.9 × 10-10) 
E) Acetic acid (Ka = 1.8 × 10-5) 
A) HF (Ka = 6.8 × 10-4) 
B) HClO (Ka = 3.0 × 10-8) 
C) HNO2 (Ka = 4.5 × 10-4) 
D) HCN (Ka = 4.9 × 10-10) 
E) Acetic acid (Ka = 1.8 × 10-5)

Question 8

Determine the pOH of a 0.35 M aqueous solution of KF. For hydrofluoric acid, Ka = 7.0 × 10-4.

Accepted Answer

A) 0.46 
B) 5.65 
C) 8.35 
D) 5.01 
E) 1.35 
A) 0.46 
B) 5.65 
C) 8.35 
D) 5.01 
E) 1.35

Question 9

Classify the following compounds as weak acids (W)or strong acids (S): hydrocyanic acid hydrofluoric acid phenol

Accepted Answer

A) W W W 
B) S S S 
C) S W W 
D) W S S 
E) W S W 
A) W W W 
B) S S S 
C) S W W 
D) W S S 
E) W S W

Question 10

Which solution below has the highest concentration of hydronium ions?

Accepted Answer

A) pH = 3.21 
B) pH = 12.6 
C) pH = 7.93 
D) pH = 9.82 
E) pH = 7.00 
A) pH = 3.21 
B) pH = 12.6 
C) pH = 7.93 
D) pH = 9.82 
E) pH = 7.00

Question 11

Using the data in the table, which of the conjugate acids below is the strongest acid?

Accepted Answer

A) NH4+ 
B) C5H5NH+ 
C) H3NOH+ 
D) NH3CH3+ 
E) NH4+ and NH3CH3+ 
A) NH4+ 
B) C5H5NH+ 
C) H3NOH+ 
D) NH3CH3+ 
E) NH4+ and NH3CH3+

Question 12

Ka for HF is 7.0 × 10-4. Kb for the fluoride ion is __________.

Accepted Answer

A) 2.0 × 10-8 
B) 1.4 × 10-11 
C) 7.0 × 10-18 
D) 7.0 × 10-4 
E) 1.4 × 103 
A) 2.0 × 10-8 
B) 1.4 × 10-11 
C) 7.0 × 10-18 
D) 7.0 × 10-4 
E) 1.4 × 103

Question 13

Using the data in the table, which of the conjugate acids below is the strongest acid?

Accepted Answer

A) HClO 
B) HCO3- 
C) H2S 
D) NH3CH3+ 
E) H2S and HClO 
A) HClO 
B) HCO3- 
C) H2S 
D) NH3CH3+ 
E) H2S and HClO

Question 14

An aqueous solution at 25.0°C contains [H+] = 0.080 M. What is the pH of the solution?

Accepted Answer

A) 1.10 
B) -1.10 
C) 13.0 
D) 0.0800 
E) 1.30 × 10-13 
A) 1.10 
B) -1.10 
C) 13.0 
D) 0.0800 
E) 1.30 × 10-13

Classify the following compounds as weak acids (W)or strong acids (S): benzoic acid nitric acid acetic acid

Determine the pH of a 0.35 M aqueous solution of KF. For hydrofluoric acid, K_a = 7.0 × 10^-4.

An aqueous solution contains 0.100 M NaOH at 25.0°C. The pH of the solution is __________.

What is the conjugate acid of NH₃?

The molar concentration of hydroxide ion in pure water at 25°C is __________.

Which one of the following is a BrØnsted -Lowry acid?

Which one of the following is the weakest acid?

Determine the pOH of a 0.35 M aqueous solution of KF. For hydrofluoric acid, K_a = 7.0 × 10^-4.

Classify the following compounds as weak acids (W)or strong acids (S): hydrocyanic acid hydrofluoric acid phenol

Which solution below has the highest concentration of hydronium ions?

Using the data in the table, which of the conjugate acids below is the strongest acid?

K_a for HF is 7.0 × 10^-4. K_b for the fluoride ion is __________.

Using the data in the table, which of the conjugate acids below is the strongest acid?

An aqueous solution at 25.0°C contains [H⁺] = 0.080 M. What is the pH of the solution?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

Exam 16: Acid-Base Equilibria

Classify the following compounds as weak acids (W)or strong acids (S): benzoic acid nitric acid acetic acid

Determine the pH of a 0.35 M aqueous solution of KF. For hydrofluoric acid, Ka = 7.0 × 10-4.

An aqueous solution contains 0.100 M NaOH at 25.0°C. The pH of the solution is __________.

What is the conjugate acid of NH3?

The molar concentration of hydroxide ion in pure water at 25°C is __________.

Which one of the following is a BrØnsted -Lowry acid?

Which one of the following is the weakest acid?

Determine the pOH of a 0.35 M aqueous solution of KF. For hydrofluoric acid, Ka = 7.0 × 10-4.

Classify the following compounds as weak acids (W)or strong acids (S): hydrocyanic acid hydrofluoric acid phenol

Which solution below has the highest concentration of hydronium ions?

Using the data in the table, which of the conjugate acids below is the strongest acid?

Ka for HF is 7.0 × 10-4. Kb for the fluoride ion is __________.

Using the data in the table, which of the conjugate acids below is the strongest acid?

An aqueous solution at 25.0°C contains [H+] = 0.080 M. What is the pH of the solution?

Introduction: Matter and Measurement

Atoms, Molecules, and Ions

Stoichiometry: Calculations With Chemical Formulas and Equations

Aqueous Reactions and Solution Stoichiometry

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

Determine the pH of a 0.35 M aqueous solution of KF. For hydrofluoric acid, K_a = 7.0 × 10^-4.

What is the conjugate acid of NH₃?

Determine the pOH of a 0.35 M aqueous solution of KF. For hydrofluoric acid, K_a = 7.0 × 10^-4.

K_a for HF is 7.0 × 10^-4. K_b for the fluoride ion is __________.

An aqueous solution at 25.0°C contains [H⁺] = 0.080 M. What is the pH of the solution?