Question 1

What is the conjugate acid of HSO4-?

Accepted Answer

A) SO42- 
B) H2SO4 
C) H3O+ 
D) OH- 
E) H2SO3 
A) SO42- 
B) H2SO4 
C) H3O+ 
D) OH- 
E) H2SO3

Question 2

Consider the reaction: H2SO3 + HCO3-   
H2CO3 + HSO3- 
A) Identify the acid,base,conjugate acid and conjugate base.
B) Identify two substances from the reaction which could be used to prepare a buffer.

Accepted Answer

A) Acid: H₂SO₃;Conjugate Base: H

Question 3

Which of the following compounds is a salt?

Accepted Answer

A) CH3CO2H 
B) NH3 
C) NH4NO3 
D) Al(OH)3 
E) C6H6 
A) CH3CO2H 
B) NH3 
C) NH4NO3 
D) Al(OH)3 
E) C6H6

Question 4

What is the normality of a solution containing 100.g HNO3 in 500.mL of solution?

Accepted Answer

A) 1.26 N 
B) 1.59 N 
C) 3.17 N 
D) 0.500 N 
E) 0.630 N 
A) 1.26 N 
B) 1.59 N 
C) 3.17 N 
D) 0.500 N 
E) 0.630 N

Question 5

In an aqueous solution that is acidic,[H3O+] is ________ than 1.0 × 10-7 and ________ than [OH-].

Accepted Answer

A) greater;less 
B) less;greater 
C) greater;greater 
D) less;less 
E) none of the above 
A) greater;less 
B) less;greater 
C) greater;greater 
D) less;less 
E) none of the above

Question 6

If the concentration of OH- is 1 × 10-2 M,the concentration of H3O+ is ________ M.

Accepted Answer

A) 1 × 100 
B) 1 × 10-2 
C) 1 × 10-7 
D) 1 × 10-12 
E) 1 × 10-14 
A) 1 × 100 
B) 1 × 10-2 
C) 1 × 10-7 
D) 1 × 10-12 
E) 1 × 10-14

Question 7

Which of the following is a strong acid?

Accepted Answer

A) HNO3 
B) H3PO4 
C) NH4+ 
D) HCO3- 
E) H2O 
A) HNO3 
B) H3PO4 
C) NH4+ 
D) HCO3- 
E) H2O

Question 8

What is the hydrogen ion concentration in a solution with pH = 2.34?

Accepted Answer

A) 4.6 × 10-3 M 
B) 2.3 × 10-3 M 
C) 2.2 × 10-12 M 
D) 1.2 × 101 M 
E) 4.3 × 10-12 M 
A) 4.6 × 10-3 M 
B) 2.3 × 10-3 M 
C) 2.2 × 10-12 M 
D) 1.2 × 101 M 
E) 4.3 × 10-12 M

Question 9

CH3NH2 + HCl  CH3NH3+ + Cl-
A conjugate acid-base pair in the reaction shown is ________ and ________.

Accepted Answer

A) CH3NH2;HCl 
B) CH3NH2;Cl- 
C) CH3NH3+;Cl- 
D) HCl;Cl- 
E) HCl;H3O+ 
A) CH3NH2;HCl 
B) CH3NH2;Cl- 
C) CH3NH3+;Cl- 
D) HCl;Cl- 
E) HCl;H3O+

Question 10

Water and HSO4- can either accept protons or donate protons.Such substances are said to be

Accepted Answer

A) amphoteric. 
B) conjugate. 
C) diprotic. 
D) monoprotic. 
E) triprotic. 
A) amphoteric. 
B) conjugate. 
C) diprotic. 
D) monoprotic. 
E) triprotic.

Question 11

Which solution is basic?

Accepted Answer

A) [H3O+] = 1.0 × 10-4 
B) [H3O+] = 1.0 × 10-7 
C) [H3O+] = 1.0 × 10-10 
D) [OH-] = 1.0 × 10-7 
E) [OH-] = 1.0 × 10-10 
A) [H3O+] = 1.0 × 10-4 
B) [H3O+] = 1.0 × 10-7 
C) [H3O+] = 1.0 × 10-10 
D) [OH-] = 1.0 × 10-7 
E) [OH-] = 1.0 × 10-10

Question 12

What is the concentration of a solution of HCl in which a 10.0 mL sample of acid required 50.0 mL of 0.150 M NaOH for neutralization?

Accepted Answer

A) 0.0300 M 
B) 0.150 M 
C) 0.600 M 
D) 0.750 M 
E) 7.50 M 
A) 0.0300 M 
B) 0.150 M 
C) 0.600 M 
D) 0.750 M 
E) 7.50 M

Question 13

Hydrogen cyanide,HCN,is a weak acid.Which equation best represents its aqueous chemistry?

Accepted Answer

A) HCN(aq)+ H2O(l)  CN-(aq)+ H3O+(aq) 
B) HCN(aq)+ H2O(l)  H2CN+(aq)+ OH-(aq) 
C) HCN(aq)  H+(aq)+ CN-(aq) 
D) HCN(aq)  H-(aq)+ CN+(aq) 
E) H2O(l)  H+(aq)+ OH-(aq) 
A) HCN(aq)+ H2O(l)  CN-(aq)+ H3O+(aq) 
B) HCN(aq)+ H2O(l)  H2CN+(aq)+ OH-(aq) 
C) HCN(aq)  H+(aq)+ CN-(aq) 
D) HCN(aq)  H-(aq)+ CN+(aq) 
E) H2O(l)  H+(aq)+ OH-(aq)

Question 14

Which example is not basic?

Accepted Answer

A) shampoo 
B) vinegar 
C) window cleaner 
D) limewater 
E) Mg(OH)2,used in remedies for upset stomach 
A) shampoo 
B) vinegar 
C) window cleaner 
D) limewater 
E) Mg(OH)2,used in remedies for upset stomach

Question 15

How many mL of 0.150 M NaOH are needed to neutralize 50.00 mL of a 0.120 M solution of H2SO4?

Accepted Answer

A) 40.0 mL 
B) 50.0 mL 
C) 80.0 mL 
D) 120.0 mL 
E) 160.0 mL 
A) 40.0 mL 
B) 50.0 mL 
C) 80.0 mL 
D) 120.0 mL 
E) 160.0 mL

Question 16

Which equation correctly represents the neutralization of aluminum hydroxide by sulfuric acid?

Accepted Answer

A) 2 Al(OH)3 + 3 H2SO4 → Al2(SO4)3 + 3 H2O 
B) Al(OH)3 + H3SO4 → AlSO4 + 3 H2O 
C) Al(OH)2 + H2SO4 → AlSO4 + 2 H2O 
D) 2 Al(OH)3 + 3 H2SO4 → Al2(SO4)3 + 6 H2O 
E) 3 Al(OH)3 + 2 H3SO4 → Al3(SO4)2 + 6 H2O 
A) 2 Al(OH)3 + 3 H2SO4 → Al2(SO4)3 + 3 H2O 
B) Al(OH)3 + H3SO4 → AlSO4 + 3 H2O 
C) Al(OH)2 + H2SO4 → AlSO4 + 2 H2O 
D) 2 Al(OH)3 + 3 H2SO4 → Al2(SO4)3 + 6 H2O 
E) 3 Al(OH)3 + 2 H3SO4 → Al3(SO4)2 + 6 H2O

Question 17

Which of the following statements is correct?

Accepted Answer

A) In an acidic solution,[H3O+] -7;[OH-] -7. 
B) In an acidic solution,[H3O+] > 10-7;[OH-] > 10-7. 
C) In an acidic solution,[H3O+] > 10-7;[OH-] -7. 
D) In an acidic solution,[H3O+] -7;[OH-] > 10-7. 
E) In an acidic solution,[H3O+] > 10-7;[OH-] = 10-7. 
A) In an acidic solution,[H3O+] -7;[OH-] -7. 
B) In an acidic solution,[H3O+] > 10-7;[OH-] > 10-7. 
C) In an acidic solution,[H3O+] > 10-7;[OH-] -7. 
D) In an acidic solution,[H3O+] -7;[OH-] > 10-7. 
E) In an acidic solution,[H3O+] > 10-7;[OH-] = 10-7.

Question 18

Which of the following solutions is a buffer?

Accepted Answer

A) a solution of acetic acid and sodium acetate 
B) a solution of acetic acid and sodium sulfate 
C) a solution of hydrochloric acid and sodium sulfate 
D) a solution of hydrochloric acid and sodium acetate 
E) a solution of sulfuric acid and sodium sulfate 
A) a solution of acetic acid and sodium acetate 
B) a solution of acetic acid and sodium sulfate 
C) a solution of hydrochloric acid and sodium sulfate 
D) a solution of hydrochloric acid and sodium acetate 
E) a solution of sulfuric acid and sodium sulfate

Question 19

If the concentration of H3O+ is 3.5 × 10-3 M,the concentration of OH- is ________ M.

Accepted Answer

A) 2.9 × 10-12 
B) 1.0 × 10-12 
C) 1.0 × 10-7 
D) 3.5 × 10-11 
E) 10.5 × 10-3 
A) 2.9 × 10-12 
B) 1.0 × 10-12 
C) 1.0 × 10-7 
D) 3.5 × 10-11 
E) 10.5 × 10-3

Question 20

Which compound produces a basic solution when dissolved in water?

Accepted Answer

A) NH4Cl 
B) NaF 
C) KClO4 
D) KCl 
E) Ca(NO3)2 
A) NH4Cl 
B) NaF 
C) KClO4 
D) KCl 
E) Ca(NO3)2

Exam 10: Acids and Bases

What is the conjugate acid of HSO4-?

Consider the reaction: H2SO3 + HCO3- H2CO3 + HSO3- A) Identify the acid,base,conjugate acid and conjugate base. B) Identify two substances from the reaction which could be used to prepare a buffer.

Which of the following compounds is a salt?

What is the normality of a solution containing 100.g HNO3 in 500.mL of solution?

In an aqueous solution that is acidic,[H3O+] is ________ than 1.0 × 10-7 and ________ than [OH-].

If the concentration of OH- is 1 × 10-2 M,the concentration of H3O+ is ________ M.

Which of the following is a strong acid?

What is the hydrogen ion concentration in a solution with pH = 2.34?

CH3NH2 + HCl CH3NH3+ + Cl- A conjugate acid-base pair in the reaction shown is ________ and ________.

Water and HSO4- can either accept protons or donate protons.Such substances are said to be

Which solution is basic?

What is the concentration of a solution of HCl in which a 10.0 mL sample of acid required 50.0 mL of 0.150 M NaOH for neutralization?

Hydrogen cyanide,HCN,is a weak acid.Which equation best represents its aqueous chemistry?

Which example is not basic?

How many mL of 0.150 M NaOH are needed to neutralize 50.00 mL of a 0.120 M solution of H2SO4?

Which equation correctly represents the neutralization of aluminum hydroxide by sulfuric acid?

Which of the following statements is correct?

Which of the following solutions is a buffer?

If the concentration of H3O+ is 3.5 × 10-3 M,the concentration of OH- is ________ M.

Which compound produces a basic solution when dissolved in water?

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Molecular Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Aldehydes and Ketones

Amines

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

Carbohydrates

The Generation of Biochemical Energy

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Protein and Amino Acid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

What is the conjugate acid of HSO₄^-?

Consider the reaction: H₂SO₃+ HCO₃^- H₂CO₃ + HSO₃^- A) Identify the acid,base,conjugate acid and conjugate base. B) Identify two substances from the reaction which could be used to prepare a buffer.

What is the normality of a solution containing 100.g HNO₃ in 500.mL of solution?

In an aqueous solution that is acidic,[H₃O⁺] is than 1.0 × 10^-7 and than [OH^-].

If the concentration of OH^- is 1 × 10^-2 M,the concentration of H₃O⁺ is ________ M.

CH₃NH₂ + HCl CH₃NH₃⁺ + Cl^- A conjugate acid-base pair in the reaction shown is and .

Water and HSO₄^- can either accept protons or donate protons.Such substances are said to be

How many mL of 0.150 M NaOH are needed to neutralize 50.00 mL of a 0.120 M solution of H₂SO₄?

If the concentration of H₃O⁺ is 3.5 × 10^-3 M,the concentration of OH^- is ________ M.