Question 1

What is the pH of a solution with a [OH-] of 4.1 × 10-3 M?

Accepted Answer

A)  -2.39 
B)  2.39 
C)  11.6 
D)  -11.6 
E)  7.00 
A)  -2.39 
B)  2.39 
C)  11.6 
D)  -11.6 
E)  7.00

Question 2

What happens to pH when the buffer capacity of a solution is exceeded?

Accepted Answer

A)  The pH increases. 
B)  The pH decreases. 
C)  The solution will become unstable. 
D)  The pH will either increase or decrease, depending on whether acid or base is added to the solution. 
E)  The pH will not be changed. 
A)  The pH increases. 
B)  The pH decreases. 
C)  The solution will become unstable. 
D)  The pH will either increase or decrease, depending on whether acid or base is added to the solution. 
E)  The pH will not be changed.

Question 3

The [H3O+] of a solution with a pH of 2 is ______ the [H3O+] of a solution with a pH of 3.

Accepted Answer

A)  one-tenth 
B)  ten times 
C)  one-half 
D)  twice 
E)  the same as 
A)  one-tenth 
B)  ten times 
C)  one-half 
D)  twice 
E)  the same as

Question 4

Which buffer system is the primary buffering system in the blood?

Accepted Answer

A)  proteins 
B)  DNA and RNA 
C)  H2PO4-/HPO42- 
D)  H2CO3/HCO3- 
E)  CH3COOH/CH3COO- 
A)  proteins 
B)  DNA and RNA 
C)  H2PO4-/HPO42- 
D)  H2CO3/HCO3- 
E)  CH3COOH/CH3COO-

Question 5

Which change in blood pH would you expect to observe in a hyperventilating patient, and what are those changes called?

Accepted Answer

A)  a drop in pH, alkalosis 
B)  a drop in pH, acidosis 
C)  an increase in pH, alkalosis 
D)  an increase in pH, acidosis 
E)  There will not be any change in blood pH. 
A)  a drop in pH, alkalosis 
B)  a drop in pH, acidosis 
C)  an increase in pH, alkalosis 
D)  an increase in pH, acidosis 
E)  There will not be any change in blood pH.

Question 6

Which of the following statements BEST describes what happens when an acid reacts with water? I.The acid donates a proton.
II.Water donates a proton.
III.Water acts as a base.
IV.Hydronium is formed.
V.Hydroxide is formed.

Accepted Answer

A)  I only 
B)  II only 
C)  I, III, and V 
D)  I, III, and IV 
E)  II and V 
A)  I only 
B)  II only 
C)  I, III, and V 
D)  I, III, and IV 
E)  II and V

Question 7

Which equation BEST describes what will happen to formic acid when it reacts with water?

Accepted Answer

A)  HCOOH (aq)+ 2 H2O (l)→ CO22- (aq)+ 2 H3O+ (aq) 
B)  HCOOH (aq)+ H2O (l)→ HCOOH2+ (aq)+ OH- (aq) 
C)  HCOOH (aq)+ H2O (l)→ HCOO- (aq)+ H3O+ (aq) 
D)  HCOOH (aq)+ H2O (l)→ H2COOH (aq)+ OH- (aq) 
E)  HCOOH (aq)+ H2O (l)→ HCOO- (aq)+ HO- (aq) 
A)  HCOOH (aq)+ 2 H2O (l)→ CO22- (aq)+ 2 H3O+ (aq) 
B)  HCOOH (aq)+ H2O (l)→ HCOOH2+ (aq)+ OH- (aq) 
C)  HCOOH (aq)+ H2O (l)→ HCOO- (aq)+ H3O+ (aq) 
D)  HCOOH (aq)+ H2O (l)→ H2COOH (aq)+ OH- (aq) 
E)  HCOOH (aq)+ H2O (l)→ HCOO- (aq)+ HO- (aq)

Question 8

Which statement BEST describes the role of water in the reaction of ethanamine and water? CH3CH2NH2 (aq)+ H2O (l)⇌ CH3CH2NH3+ (aq)+ OH- (aq)

Accepted Answer

A)  Water is the acid. 
B)  Water is the base. 
C)  Water is the conjugate acid. 
D)  Water is the conjugate base. 
E)  Water is both an acid and a base. 
A)  Water is the acid. 
B)  Water is the base. 
C)  Water is the conjugate acid. 
D)  Water is the conjugate base. 
E)  Water is both an acid and a base.

Question 9

Each circle is a sample of an aqueous acidic or basic solution.Which solution contains a weak base?

Accepted Answer

A)  figure a 
B)  figure b 
C)  figure c 
D)  figure d 
E)  figure e 
A)  figure a 
B)  figure b 
C)  figure c 
D)  figure d 
E)  figure e

Question 10

Each circle is a sample of an aqueous acidic or basic solution.Which solution contains a strong acid?

Accepted Answer

A)  figure a 
B)  figure b 
C)  figure c 
D)  figure d 
E)  figure e 
A)  figure a 
B)  figure b 
C)  figure c 
D)  figure d 
E)  figure e

Question 11

What is the [OH-] in a solution that has a [H3O+] of 1 × 10-6 M?

Accepted Answer

A)  1 × 10-20 M 
B)  1 × 10-8 M 
C)  1 × 10-6 M 
D)  1 × 10-7 M 
E)  1 × 107 M 
A)  1 × 10-20 M 
B)  1 × 10-8 M 
C)  1 × 10-6 M 
D)  1 × 10-7 M 
E)  1 × 107 M

Question 12

When an acid is dissolved in water, it reacts to give _________ and ________.

Accepted Answer

A)  hydroxide; hydronium 
B)  hydronium; the conjugate acid 
C)  hydroxide; the conjugate acid 
D)  hydronium; the conjugate base 
E)  hydroxide; the conjugate base 
A)  hydroxide; hydronium 
B)  hydronium; the conjugate acid 
C)  hydroxide; the conjugate acid 
D)  hydronium; the conjugate base 
E)  hydroxide; the conjugate base

Question 13

The following figure illustrates the action of a HF and F- buffer where the sizes of the boxes are proportional to the concentrations of HF and F- in solution.According to this figure, what happens when H3O+ is added to the HF/F- buffer?

Accepted Answer

A)  The pH decreases. 
B)  The pH increases. 
C)  The concentration of HF increases. 
D)  The concentration of F- increases. 
E)  Nothing happens. 
A)  The pH decreases. 
B)  The pH increases. 
C)  The concentration of HF increases. 
D)  The concentration of F- increases. 
E)  Nothing happens.

Question 14

The following figure illustrates the action of a HF and F- buffer where the sizes of the boxes are proportional to the concentrations of HF and F- in solution.If you add hydronium until all of the F- is converted into HF and then add a little more hydronium, what is observed?

Accepted Answer

A)  The pH increases. 
B)  The pH decreases. 
C)  The pH stays the same. 
D)  The solution will be neutralized. 
E)  The pH changes, but it is not possible to determine how it will change. 
A)  The pH increases. 
B)  The pH decreases. 
C)  The pH stays the same. 
D)  The solution will be neutralized. 
E)  The pH changes, but it is not possible to determine how it will change.

Question 15

A sample of gastric juice has a pH of 1.20.What is the concentration of hydroxide in this sample?

Accepted Answer

A)  1.6 × 10-13 M 
B)  6.3 × 10-2 M 
C)  1.0 × 10-7 M 
D)  6.3 × 1012 M 
E)  6.3 × 10-16 M 
A)  1.6 × 10-13 M 
B)  6.3 × 10-2 M 
C)  1.0 × 10-7 M 
D)  6.3 × 1012 M 
E)  6.3 × 10-16 M

Question 16

Which statement BEST describes the following reaction? HCOOH + H2O ⇌ HCOO- + H3O+

Accepted Answer

A)  This is the reaction of a strong acid. 
B)  This is the reaction of a weak acid. 
C)  This reaction is the dissociation of a strong base. 
D)  This is the reaction of a weak base. 
E)  This is not an acid-base reaction. 
A)  This is the reaction of a strong acid. 
B)  This is the reaction of a weak acid. 
C)  This reaction is the dissociation of a strong base. 
D)  This is the reaction of a weak base. 
E)  This is not an acid-base reaction.

Question 17

All acid-base reactions that we consider in this chapter occur in

Accepted Answer

A)  acidic solution. 
B)  basic solution. 
C)  neutral solution. 
D)  aqueous solution. 
E)  nonpolar solvents. 
A)  acidic solution. 
B)  basic solution. 
C)  neutral solution. 
D)  aqueous solution. 
E)  nonpolar solvents.

Question 18

Which of the following are conjugate acid-base pairs in the acid-base reaction between ethanamine and water? CH3CH2NH2 (aq)+ H2O (l)⇌ CH3CH2NH3+ (aq)+ OH- (aq)
I.H2O and CH3CH2NH2
II.H2O and OH-
III.CH3CH2NH2 and CH3CH2NH3+
IV.CH3CH2NH3+ and OH-

Accepted Answer

A)  I only 
B)  I and IV 
C)  II only 
D)  II and IV 
E)  II and III 
A)  I only 
B)  I and IV 
C)  II only 
D)  II and IV 
E)  II and III

Question 19

A hydrogen atom without an electron is referred to as

Accepted Answer

A)  hydroxide. 
B)  hydronium. 
C)  a proton. 
D)  an acid. 
E)  a conjugate base. 
A)  hydroxide. 
B)  hydronium. 
C)  a proton. 
D)  an acid. 
E)  a conjugate base.

Question 20

Which of the following is a balanced equation for a neutralization reaction?

Accepted Answer

A)  Al(OH)3 (s)+ HCl (aq)→ 3 H2O (l)+ AlCl3 (aq) 
B)  Mg(OH)2 (s)+ HNO3 (aq)→ 2 H2O (l)+ Mg(NO3)2 (aq) 
C)  Ca(OH)2 (s)+ HNO3 (aq)→ 2 H2O (l)+ Ca(NO3)2 (aq) 
D)  KOH (s)+ HNO3 (aq)→ H2O (l)+ KNO3 (aq) 
E)  2 Al(OH)3 (s)+ HCl (aq)→ 3 H2O (l)+ AlCl3 (aq) 
A)  Al(OH)3 (s)+ HCl (aq)→ 3 H2O (l)+ AlCl3 (aq) 
B)  Mg(OH)2 (s)+ HNO3 (aq)→ 2 H2O (l)+ Mg(NO3)2 (aq) 
C)  Ca(OH)2 (s)+ HNO3 (aq)→ 2 H2O (l)+ Ca(NO3)2 (aq) 
D)  KOH (s)+ HNO3 (aq)→ H2O (l)+ KNO3 (aq) 
E)  2 Al(OH)3 (s)+ HCl (aq)→ 3 H2O (l)+ AlCl3 (aq)

What is the pH of a solution with a [OH^-] of 4.1 × 10^-3 M?

What happens to pH when the buffer capacity of a solution is exceeded?

The [H₃O⁺] of a solution with a pH of 2 is ______ the [H₃O⁺] of a solution with a pH of 3.

Which buffer system is the primary buffering system in the blood?

Which change in blood pH would you expect to observe in a hyperventilating patient, and what are those changes called?

Which of the following statements BEST describes what happens when an acid reacts with water? I.The acid donates a proton. II.Water donates a proton. III.Water acts as a base. IV.Hydronium is formed. V.Hydroxide is formed.

Which equation BEST describes what will happen to formic acid when it reacts with water?

Which statement BEST describes the role of water in the reaction of ethanamine and water? CH₃CH₂NH₂ (aq)+ H₂O (l)⇌ CH₃CH₂NH₃⁺ (aq)+ OH^- (aq)

Each circle is a sample of an aqueous acidic or basic solution.Which solution contains a weak base?

Each circle is a sample of an aqueous acidic or basic solution.Which solution contains a strong acid?

What is the [OH^-] in a solution that has a [H₃O⁺] of 1 × 10^-6 M?

When an acid is dissolved in water, it reacts to give _ and .

The following figure illustrates the action of a HF and F^- buffer where the sizes of the boxes are proportional to the concentrations of HF and F^- in solution.According to this figure, what happens when H₃O⁺ is added to the HF/F^- buffer?

The following figure illustrates the action of a HF and F^- buffer where the sizes of the boxes are proportional to the concentrations of HF and F^- in solution.If you add hydronium until all of the F^- is converted into HF and then add a little more hydronium, what is observed?

A sample of gastric juice has a pH of 1.20.What is the concentration of hydroxide in this sample?

Which statement BEST describes the following reaction? HCOOH + H₂O ⇌ HCOO^- + H₃O⁺

All acid-base reactions that we consider in this chapter occur in

Which of the following are conjugate acid-base pairs in the acid-base reaction between ethanamine and water? CH₃CH₂NH₂ (aq)+ H₂O (l)⇌ CH₃CH₂NH₃⁺ (aq)+ OH^- (aq) I.H₂O and CH₃CH₂NH₂ II.H₂O and OH^- III.CH₃CH₂NH₂ and CH₃CH₂NH₃⁺ IV.CH₃CH₂NH₃⁺ and OH^-

A hydrogen atom without an electron is referred to as

Which of the following is a balanced equation for a neutralization reaction?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 9: Acids and Bases, Ph, and Buffers

What is the pH of a solution with a [OH-] of 4.1 × 10-3 M?

What happens to pH when the buffer capacity of a solution is exceeded?

The [H3O+] of a solution with a pH of 2 is ______ the [H3O+] of a solution with a pH of 3.

Which buffer system is the primary buffering system in the blood?

Which change in blood pH would you expect to observe in a hyperventilating patient, and what are those changes called?

Which of the following statements BEST describes what happens when an acid reacts with water? I.The acid donates a proton. II.Water donates a proton. III.Water acts as a base. IV.Hydronium is formed. V.Hydroxide is formed.

Which equation BEST describes what will happen to formic acid when it reacts with water?

Which statement BEST describes the role of water in the reaction of ethanamine and water? CH3CH2NH2 (aq)+ H2O (l)⇌ CH3CH2NH3+ (aq)+ OH- (aq)

Each circle is a sample of an aqueous acidic or basic solution.Which solution contains a weak base?

Each circle is a sample of an aqueous acidic or basic solution.Which solution contains a strong acid?

What is the [OH-] in a solution that has a [H3O+] of 1 × 10-6 M?

When an acid is dissolved in water, it reacts to give _________ and ________.

The following figure illustrates the action of a HF and F- buffer where the sizes of the boxes are proportional to the concentrations of HF and F- in solution.According to this figure, what happens when H3O+ is added to the HF/F- buffer?

The following figure illustrates the action of a HF and F- buffer where the sizes of the boxes are proportional to the concentrations of HF and F- in solution.If you add hydronium until all of the F- is converted into HF and then add a little more hydronium, what is observed?

A sample of gastric juice has a pH of 1.20.What is the concentration of hydroxide in this sample?

Which statement BEST describes the following reaction? HCOOH + H2O ⇌ HCOO- + H3O+

All acid-base reactions that we consider in this chapter occur in

Which of the following are conjugate acid-base pairs in the acid-base reaction between ethanamine and water? CH3CH2NH2 (aq)+ H2O (l)⇌ CH3CH2NH3+ (aq)+ OH- (aq) I.H2O and CH3CH2NH2 II.H2O and OH- III.CH3CH2NH2 and CH3CH2NH3+ IV.CH3CH2NH3+ and OH-

A hydrogen atom without an electron is referred to as

Which of the following is a balanced equation for a neutralization reaction?

Matter, Energy, and Measurement

Atomic Structure and Radioisotopes

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

What is the pH of a solution with a [OH^-] of 4.1 × 10^-3 M?

The [H₃O⁺] of a solution with a pH of 2 is ______ the [H₃O⁺] of a solution with a pH of 3.

Which statement BEST describes the role of water in the reaction of ethanamine and water? CH₃CH₂NH₂ (aq)+ H₂O (l)⇌ CH₃CH₂NH₃⁺ (aq)+ OH^- (aq)

What is the [OH^-] in a solution that has a [H₃O⁺] of 1 × 10^-6 M?

When an acid is dissolved in water, it reacts to give _ and .

The following figure illustrates the action of a HF and F^- buffer where the sizes of the boxes are proportional to the concentrations of HF and F^- in solution.According to this figure, what happens when H₃O⁺ is added to the HF/F^- buffer?

The following figure illustrates the action of a HF and F^- buffer where the sizes of the boxes are proportional to the concentrations of HF and F^- in solution.If you add hydronium until all of the F^- is converted into HF and then add a little more hydronium, what is observed?

Which statement BEST describes the following reaction? HCOOH + H₂O ⇌ HCOO^- + H₃O⁺

Which of the following are conjugate acid-base pairs in the acid-base reaction between ethanamine and water? CH₃CH₂NH₂ (aq)+ H₂O (l)⇌ CH₃CH₂NH₃⁺ (aq)+ OH^- (aq) I.H₂O and CH₃CH₂NH₂ II.H₂O and OH^- III.CH₃CH₂NH₂ and CH₃CH₂NH₃⁺ IV.CH₃CH₂NH₃⁺ and OH^-