Question 1

What are the relative proportions of reactants to products for the dissociation of the weak base trimethylamine? (CH3)3N(aq) + H2O(l) F1S1S1W1F1F1F10 (CH3)3NH+(aq) + OH-(aq)

Accepted Answer

A)  The reaction consists of 100% of the reactant (CH3)3N. 
B)  The reaction consists of some of the reactant (CH3)3N but mostly the products (CH3)3NH+ and OH. 
C)  The reaction consists of mostly the reactant (CH3)3N but some of the products (CH3)3NH+ and OH. 
D)  The reaction consists of 100% of the products (CH3)3NH+ and OH. 
A)  The reaction consists of 100% of the reactant (CH3)3N. 
B)  The reaction consists of some of the reactant (CH3)3N but mostly the products (CH3)3NH+ and OH. 
C)  The reaction consists of mostly the reactant (CH3)3N but some of the products (CH3)3NH+ and OH. 
D)  The reaction consists of 100% of the products (CH3)3NH+ and OH. C

Question 2

The conjugate base of carbonic acid, H2CO3, is ____________________.

Accepted Answer

bicarbonate, HCO₃^-

Question 3

Which of the following is not a base?

Accepted Answer

A)  sodium hydroxide 
B)  sodium chloride 
C)  sodium carbonate 
D)  sodium bicarbonate 
A)  sodium hydroxide 
B)  sodium chloride 
C)  sodium carbonate 
D)  sodium bicarbonate B

Question 4

Because acetic acid can dissociate into hydronium ion and acetate ion and then the acetate ion can accept a proton from a hydronium ion, the reaction is ____________________.

Accepted Answer

The answer of Because acetic acid can dissociate into hydronium...

Question 5

Which of the following reactions shows the Brønsted-Lowry base dissociation of sodium hydroxide?

Accepted Answer

A)  NaOH(aq) + H2O(l) F1S1S1W1F1F1F10 Na+(aq) + OH-(aq) + H2O(l) 
B)  KOH(s) F1S1S1W1F1F1F10 K+(aq) + OH-(aq) 
C)  NaOH(aq) + H+(aq) F1S1S1W1F1F1F10 NaOH2+(aq) 
D)  NaOH(aq) + OH-(aq) F1S1S1W1F1F1F10 Na(OH)2-(aq) 
A)  NaOH(aq) + H2O(l) F1S1S1W1F1F1F10 Na+(aq) + OH-(aq) + H2O(l) 
B)  KOH(s) F1S1S1W1F1F1F10 K+(aq) + OH-(aq) 
C)  NaOH(aq) + H+(aq) F1S1S1W1F1F1F10 NaOH2+(aq) 
D)  NaOH(aq) + OH-(aq) F1S1S1W1F1F1F10 Na(OH)2-(aq)

Question 6

Acid reflux disease (GERD) is caused by

Accepted Answer

A)  generation of acid in the esophagus. 
B)  flow of acid from the esophagus to the stomach. 
C)  flow of acid from the stomach to the esophagus. 
D)  acid inflaming the stomach lining. 
A)  generation of acid in the esophagus. 
B)  flow of acid from the esophagus to the stomach. 
C)  flow of acid from the stomach to the esophagus. 
D)  acid inflaming the stomach lining.

Question 7

Which of the following is a hydronium ion?

Accepted Answer

A)  H+ 
B)  OH- 
C)  H4O2+ 
D)  H3O+ 
A)  H+ 
B)  OH- 
C)  H4O2+ 
D)  H3O+

Question 8

What is the net ionic equation for the reaction of nitric acid, HNO3, and potassium hydroxide, KOH?

Accepted Answer

A)  HNO3(aq) + KOH(aq) F1S1S1W1F1F1F10 H2O(l) + KNO3(aq) 
B)  H+(aq) + NO3-(aq) + K+(aq) + OH-(aq) F1S1S1W1F1F1F10 H2O(l) + NO3-(aq) + K+(aq) 
C)  H+(aq) + OH-(aq) F1S1S1W1F1F1F10 H2O(l) 
D)  HNO3(aq) + KOH(aq) F1S1S1W1F1F1F10 H2O(l) + K+(aq) + NO3-(aq) 
A)  HNO3(aq) + KOH(aq) F1S1S1W1F1F1F10 H2O(l) + KNO3(aq) 
B)  H+(aq) + NO3-(aq) + K+(aq) + OH-(aq) F1S1S1W1F1F1F10 H2O(l) + NO3-(aq) + K+(aq) 
C)  H+(aq) + OH-(aq) F1S1S1W1F1F1F10 H2O(l) 
D)  HNO3(aq) + KOH(aq) F1S1S1W1F1F1F10 H2O(l) + K+(aq) + NO3-(aq)

Question 9

Acetate is the ____________________ of acetic acid.

Accepted Answer

The answer of Acetate is the ____________________ of acetic acid....

Question 10

Which of the following reactions describes the Brønsted-Lowry behavior of perchloric acid, HClO4?

Accepted Answer

A)  HClO4(aq) + H2O(l) F1S1S1W1F1F1F10 OH-(aq) + H2ClO4+aq) 
B)  HClO4(aq) + H2O(l) F1S1S1W1F1F1F10 H3O+(aq) + ClO4-(aq) 
C)  HClO4(aq) + H2O(l) F1S1S1W1F1F1F10 H3O+(aq) + ClO2-(aq) + O2(g) 
D)  2 HClO4(aq) + H2O(l) F1S1S1W1F1F1F10 H4O2+(aq) + 2ClO4-(aq) 
A)  HClO4(aq) + H2O(l) F1S1S1W1F1F1F10 OH-(aq) + H2ClO4+aq) 
B)  HClO4(aq) + H2O(l) F1S1S1W1F1F1F10 H3O+(aq) + ClO4-(aq) 
C)  HClO4(aq) + H2O(l) F1S1S1W1F1F1F10 H3O+(aq) + ClO2-(aq) + O2(g) 
D)  2 HClO4(aq) + H2O(l) F1S1S1W1F1F1F10 H4O2+(aq) + 2ClO4-(aq)

Question 11

A mixture of chemical substances that resists change in pH is a ____________________.

Accepted Answer

The answer of A mixture of chemical substances that resists...

Question 12

Heartburn is caused by

Accepted Answer

A)  a heart attack. 
B)  ingestion of acid. 
C)  acid in the stomach. 
D)  bBackflow of acid into the esophagus. 
A)  a heart attack. 
B)  ingestion of acid. 
C)  acid in the stomach. 
D)  bBackflow of acid into the esophagus.

Question 13

Which of the following mixtures of chemical substances would be a buffer?

Accepted Answer

A)  HCO3- and H2O 
B)  H2CO3 and H2O 
C)  H2CO3 and HCO3- 
D)  HCO3- and H3O+ 
A)  HCO3- and H2O 
B)  H2CO3 and H2O 
C)  H2CO3 and HCO3- 
D)  HCO3- and H3O+

Question 14

What is the concentration of H3O+ ion in pure water?

Accepted Answer

A)  1 F1F1F1S1F1F1F10 10-14 M 
B)  2 F1F1F1S1F1F1F10 10-14 M 
C)  1 F1F1F1S1F1F1F10 107 M 
D)  1 F1F1F1S1F1F1F10 10-7 M 
A)  1 F1F1F1S1F1F1F10 10-14 M 
B)  2 F1F1F1S1F1F1F10 10-14 M 
C)  1 F1F1F1S1F1F1F10 107 M 
D)  1 F1F1F1S1F1F1F10 10-7 M

Question 15

Chloride, Cl-, is the conjugate base of the strong acid HCl. Acetate, CH3CO2-, is the conjugate base of the weak acid acetic acid, CH3CO2H. What is the relative strength of these two bases? Explain your answer.

Accepted Answer

Since HCl is a strong acid, it readily d

Question 16

Which of the following common drugs acts as a Brønsted-Lowry base?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 17

The acidity of formic acid, CHO2H, results from

Accepted Answer

A)  CHO2H. 
B)  CHO2. 
C)  H2O. 
D)  H3O+. 
A)  CHO2H. 
B)  CHO2. 
C)  H2O. 
D)  H3O+.

Question 18

Which of the following may be a Brønsted-Lowry base?

Accepted Answer

A)  KOH 
B)  H2O 
C)  NH3 
D)  all of the above 
A)  KOH 
B)  H2O 
C)  NH3 
D)  all of the above

Question 19

Perchloric acid (HClO4) is a strong acid. What is the pH of a 0.0001 M solution of this acid?

Accepted Answer

A)  4 
B)  3 
C)  5 
D)  7 
A)  4 
B)  3 
C)  5 
D)  7

Question 20

Describe the action of a carbonic acid (H2CO3) and bicarbonate (HCO3-) buffer when an acid is introduced.

Accepted Answer

The H₃O⁺ generated by the introd

What are the relative proportions of reactants to products for the dissociation of the weak base trimethylamine? (CH₃)₃N(aq) + H₂O(l)  (CH₃)₃NH⁺(aq) + OH^-(aq)

The conjugate base of carbonic acid, H₂CO₃, is ____________________.

Which of the following is not a base?

Because acetic acid can dissociate into hydronium ion and acetate ion and then the acetate ion can accept a proton from a hydronium ion, the reaction is ____________________.

Which of the following reactions shows the Brønsted-Lowry base dissociation of sodium hydroxide?

Acid reflux disease (GERD) is caused by

Which of the following is a hydronium ion?

What is the net ionic equation for the reaction of nitric acid, HNO₃, and potassium hydroxide, KOH?

Acetate is the ____________________ of acetic acid.

Which of the following reactions describes the Brønsted-Lowry behavior of perchloric acid, HClO₄?

A mixture of chemical substances that resists change in pH is a ____________________.

Heartburn is caused by

Which of the following mixtures of chemical substances would be a buffer?

What is the concentration of H₃O⁺ ion in pure water?

Chloride, Cl-, is the conjugate base of the strong acid HCl. Acetate, CH₃CO₂^-, is the conjugate base of the weak acid acetic acid, CH₃CO₂H. What is the relative strength of these two bases? Explain your answer.

Which of the following common drugs acts as a Brønsted-Lowry base?

The acidity of formic acid, CHO₂H, results from

Which of the following may be a Brønsted-Lowry base?

Perchloric acid (HClO₄) is a strong acid. What is the pH of a 0.0001 M solution of this acid?

Describe the action of a carbonic acid (H₂CO₃) and bicarbonate (HCO₃^-) buffer when an acid is introduced.

Antibiotics and Resistance: an Introduction to the Molecules of Life

Elements of Life and Death: The Chemistry of Elements and Atoms

Chemical Bonding

Carbon: The Element of Life

Molecular Diversity

Chemical Reactions

Monomers and Polymers

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Molecules and Ions in Solution

Measuring Concentration

DNA: The Molecule of Heredity

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Enzymes As Biological Catalysts

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Exam 11: Acids and Bases

What are the relative proportions of reactants to products for the dissociation of the weak base trimethylamine? (CH3)3N(aq) + H2O(l)  (CH3)3NH+(aq) + OH-(aq)

The conjugate base of carbonic acid, H2CO3, is ____________________.

Which of the following is not a base?

Because acetic acid can dissociate into hydronium ion and acetate ion and then the acetate ion can accept a proton from a hydronium ion, the reaction is ____________________.

Which of the following reactions shows the Brønsted-Lowry base dissociation of sodium hydroxide?

Acid reflux disease (GERD) is caused by

Which of the following is a hydronium ion?

What is the net ionic equation for the reaction of nitric acid, HNO3, and potassium hydroxide, KOH?

Acetate is the ____________________ of acetic acid.

Which of the following reactions describes the Brønsted-Lowry behavior of perchloric acid, HClO4?

A mixture of chemical substances that resists change in pH is a ____________________.

Heartburn is caused by

Which of the following mixtures of chemical substances would be a buffer?

What is the concentration of H3O+ ion in pure water?

Chloride, Cl-, is the conjugate base of the strong acid HCl. Acetate, CH3CO2-, is the conjugate base of the weak acid acetic acid, CH3CO2H. What is the relative strength of these two bases? Explain your answer.

Which of the following common drugs acts as a Brønsted-Lowry base?

The acidity of formic acid, CHO2H, results from

Which of the following may be a Brønsted-Lowry base?

Perchloric acid (HClO4) is a strong acid. What is the pH of a 0.0001 M solution of this acid?

Describe the action of a carbonic acid (H2CO3) and bicarbonate (HCO3-) buffer when an acid is introduced.

Antibiotics and Resistance: an Introduction to the Molecules of Life

Elements of Life and Death: The Chemistry of Elements and Atoms

Chemical Bonding

Carbon: The Element of Life

Molecular Diversity

Chemical Reactions

Monomers and Polymers

The Unusual Nature of Water

Molecules and Ions in Solution

Measuring Concentration

DNA: The Molecule of Heredity

From DNA to Proteins

Enzymes As Biological Catalysts

Drug Development

Filters

What are the relative proportions of reactants to products for the dissociation of the weak base trimethylamine? (CH₃)₃N(aq) + H₂O(l)  (CH₃)₃NH⁺(aq) + OH^-(aq)

The conjugate base of carbonic acid, H₂CO₃, is ____________________.

What is the net ionic equation for the reaction of nitric acid, HNO₃, and potassium hydroxide, KOH?

Which of the following reactions describes the Brønsted-Lowry behavior of perchloric acid, HClO₄?

What is the concentration of H₃O⁺ ion in pure water?

Chloride, Cl-, is the conjugate base of the strong acid HCl. Acetate, CH₃CO₂^-, is the conjugate base of the weak acid acetic acid, CH₃CO₂H. What is the relative strength of these two bases? Explain your answer.

The acidity of formic acid, CHO₂H, results from

Perchloric acid (HClO₄) is a strong acid. What is the pH of a 0.0001 M solution of this acid?

Describe the action of a carbonic acid (H₂CO₃) and bicarbonate (HCO₃^-) buffer when an acid is introduced.