Question 1

Which of the following is the correct equilibrium expression for the autoionization of water?

Accepted Answer

A) Kw = [H2O]2 
B)    
C) Kw = [OH][H3O] 
D) Kw = [OH-][H3O+] 
E)    
A) Kw = [H2O]2 
B)    
C) Kw = [OH][H3O] 
D) Kw = [OH-][H3O+] 
E)

Question 2

All strong acids have weak conjugate bases.

Accepted Answer

A) True 
 B)False

Question 3

Which is the most acidic oxide?

Accepted Answer

A) SO2 
B) Al2O3 
C) CaO 
D) PbO 
E) H2O 
A) SO2 
B) Al2O3 
C) CaO 
D) PbO 
E) H2O

Question 4

Which is a Lewis acid?

Accepted Answer

A) CH3NH2 
B) BCl3 
C) F- 
D) BF4- 
E) CH4 
A) CH3NH2 
B) BCl3 
C) F- 
D) BF4- 
E) CH4

Question 5

What are the products of hydrolysis of NH4Cl?

Accepted Answer

A) NH4+ + HCl 
B) NH3 + OH- + HCl 
C) NH3 + H3O+ + Cl- 
D) NH4OH + HCl 
E) No hydrolysis occurs. 
A) NH4+ + HCl 
B) NH3 + OH- + HCl 
C) NH3 + H3O+ + Cl- 
D) NH4OH + HCl 
E) No hydrolysis occurs.

Question 6

Which is a basic oxide?

Accepted Answer

A) NO2 
B) H2O 
C) Na2O 
D) SnO 
E) SO2 
A) NO2 
B) H2O 
C) Na2O 
D) SnO 
E) SO2

Question 7

In comparing three solutions with pHs of 2.0,4.8,and 5.2,which solution is the most acidic?

Accepted Answer

The soluti

Question 8

Which is a Lewis acid?

Accepted Answer

A) NH3 
B) NH4+ 
C) H2O 
D) BF3 
E) F- 
A) NH3 
B) NH4+ 
C) H2O 
D) BF3 
E) F-

Question 9

Which one of these responses is true with regard to a 0.1 M solution of a weak acid HA?

Accepted Answer

A) [H+] > 0.1 M. 
B) pH = 1.0 
C) [H+] -] 
D) pH > 1.0 
E) [OH-] > [H+] 
A) [H+] > 0.1 M. 
B) pH = 1.0 
C) [H+] -] 
D) pH > 1.0 
E) [OH-] > [H+]

Question 10

Which is the weakest acid?

Accepted Answer

A) SO42- 
B) H2SO3 
C) H2SO4 
D) HSO4- 
E) HSO3- 
A) SO42- 
B) H2SO3 
C) H2SO4 
D) HSO4- 
E) HSO3-

Question 11

Which is an amphoteric oxide?

Accepted Answer

A) Na2O 
B) MgO 
C) Al2O3 
D) SO2 
E) Cl2O7 
A) Na2O 
B) MgO 
C) Al2O3 
D) SO2 
E) Cl2O7

Question 12

Which is a basic oxide?

Accepted Answer

A) CO2 
B) CaO 
C) SO2 
D) H2O 
E) NO2 
A) CO2 
B) CaO 
C) SO2 
D) H2O 
E) NO2

Question 13

A solution is prepared by adding 0.10 mol of lithium nitrate,LiNO3,to 1.00 L of water.Which statement about the solution is correct?

Accepted Answer

A) The solution is basic. 
B) The solution is neutral. 
C) The solution is weakly acidic. 
D) The solution is strongly acidic. 
E) The values for Ka and Kb for the species in solution must be known before a prediction can be made. 
A) The solution is basic. 
B) The solution is neutral. 
C) The solution is weakly acidic. 
D) The solution is strongly acidic. 
E) The values for Ka and Kb for the species in solution must be known before a prediction can be made.

Question 14

What is the pH of a 0.014 M Ca(OH)2 solution?

Accepted Answer

A) 1.85 
B) 1.55 
C) 12.15 
D) 12.45 
E) 15.85 
A) 1.85 
B) 1.55 
C) 12.15 
D) 12.45 
E) 15.85

Question 15

Which diagram best represents the products when equimolar amounts of HF(g)and NH3(g)react?

Accepted Answer

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

Question 16

The substance HClO4 is considered to be

Accepted Answer

A) a weak acid. 
B) a weak base. 
C) a strong acid. 
D) a strong base. 
E) a neutral compound. 
A) a weak acid. 
B) a weak base. 
C) a strong acid. 
D) a strong base. 
E) a neutral compound.

Question 17

Carboxylic acids are _____.

Accepted Answer

A) always weak acids 
B) weak or strong acids depending on the number of carbons in the structure 
C) always weak bases 
D) inorganic acids 
A) always weak acids 
B) weak or strong acids depending on the number of carbons in the structure 
C) always weak bases 
D) inorganic acids

Question 18

Which is the most basic oxide?

Accepted Answer

A) Bi2O3 
B) SiO2 
C) Cs2O 
D) Na2O 
E) H2O 
A) Bi2O3 
B) SiO2 
C) Cs2O 
D) Na2O 
E) H2O

Question 19

Which of the following species can act as a Lewis acid?

Accepted Answer

A) NH3 
B) F- 
C) H2O 
D) NH4+ 
E) BF3 
A) NH3 
B) F- 
C) H2O 
D) NH4+ 
E) BF3

Question 20

Which is the weakest acid?

Accepted Answer

A) HBrO3 
B) HClO 
C) HBrO2 
D) HBrO 
E) HClO3 
A) HBrO3 
B) HClO 
C) HBrO2 
D) HBrO 
E) HClO3

Exam 16: Acids and Bases

Which of the following is the correct equilibrium expression for the autoionization of water?

All strong acids have weak conjugate bases.

Which is the most acidic oxide?

Which is a Lewis acid?

What are the products of hydrolysis of NH4Cl?

Which is a basic oxide?

In comparing three solutions with pHs of 2.0,4.8,and 5.2,which solution is the most acidic?

Which is a Lewis acid?

Which one of these responses is true with regard to a 0.1 M solution of a weak acid HA?

Which is the weakest acid?

Which is an amphoteric oxide?

Which is a basic oxide?

A solution is prepared by adding 0.10 mol of lithium nitrate,LiNO3,to 1.00 L of water.Which statement about the solution is correct?

What is the pH of a 0.014 M Ca(OH)2 solution?

Which diagram best represents the products when equimolar amounts of HF(g)and NH3(g)react?

The substance HClO4 is considered to be

Carboxylic acids are _____.

Which is the most basic oxide?

Which of the following species can act as a Lewis acid?

Which is the weakest acid?

Chemistry: the Central Science

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

What are the products of hydrolysis of NH₄Cl?

A solution is prepared by adding 0.10 mol of lithium nitrate,LiNO₃,to 1.00 L of water.Which statement about the solution is correct?

What is the pH of a 0.014 M Ca(OH)₂ solution?

Which diagram best represents the products when equimolar amounts of HF(g)and NH₃(g)react?

The substance HClO₄ is considered to be