Question 1

Acids that partially ionize in water are:

Accepted Answer

A)  strong bases. 
B)  weak bases. 
C)  strong acids. 
D)  weak acids. 
A)  strong bases. 
B)  weak bases. 
C)  strong acids. 
D)  weak acids.

Question 2

A buffer solution contains a mixture of carbonic acid (H2CO3) and potassium hydrogen carbonate (KHCO3). What reaction will take place if H+ is added to this solution?

Accepted Answer

A)  H2CO3 (aq) + H+ (aq) F1F1F1S1F1F1F10 H3CO3+ (aq) 
B)  HCO3- (aq) + H+ (aq) F1F1F1S1F1F1F10 H2CO3 (aq) 
C)  KHCO3 (aq) + H+ (aq) F1F1F1S1F1F1F10 KH2CO3 (aq) 
D)  CO32- (aq) + H+ (aq) F1F1F1S1F1F1F10 HC2H3O2 (aq) 
A)  H2CO3 (aq) + H+ (aq) F1F1F1S1F1F1F10 H3CO3+ (aq) 
B)  HCO3- (aq) + H+ (aq) F1F1F1S1F1F1F10 H2CO3 (aq) 
C)  KHCO3 (aq) + H+ (aq) F1F1F1S1F1F1F10 KH2CO3 (aq) 
D)  CO32- (aq) + H+ (aq) F1F1F1S1F1F1F10 HC2H3O2 (aq)

Question 3

Identify the Brønsted base in this reaction. 
H2O (l) + HNO3 (aq) F1F1F1S1F1F1F10 H3O+ (aq) + NO3- (aq)

Accepted Answer

A)  H2O (l) 
B)  HNO3 (aq) 
C)  H3O+ (aq) 
D)  NO3- (aq) 
A)  H2O (l) 
B)  HNO3 (aq) 
C)  H3O+ (aq) 
D)  NO3- (aq)

Question 4

Which combination would make a buffer solution?

Accepted Answer

A)  0.1 M HCl and 0.1 M NaCl 
B)  0.1 M H2CO3 and 0.1 M NaHCO3 
C)  0.4 M HNO3 and 0.4 M NaNO3 
D)  0.15 M H2SO4 and 0.4 M CaSO4 
A)  0.1 M HCl and 0.1 M NaCl 
B)  0.1 M H2CO3 and 0.1 M NaHCO3 
C)  0.4 M HNO3 and 0.4 M NaNO3 
D)  0.15 M H2SO4 and 0.4 M CaSO4

Question 5

A buffer solution contains a mixture of acetic acid (HC2H3O2) and potassium acetate (KC2H3O2). What reaction will take place if H+ is added to this solution?

Accepted Answer

A)  HC2H3O2 (aq) + H+ (aq) F1F1F1S1F1F1F10 H2C2H3O2+ (aq) 
B)  C2H3O2- (aq) + H+ (aq) F1F1F1S1F1F1F10 H2C2H3O2+ (aq) 
C)  KC2H3O2 (aq) + H+ (aq) F1F1F1S1F1F1F10 KHC2H3O2 (aq) 
D)  C2H3O2- (aq) + H+ (aq) F1F1F1S1F1F1F10 HC2H3O2 (aq) 
A)  HC2H3O2 (aq) + H+ (aq) F1F1F1S1F1F1F10 H2C2H3O2+ (aq) 
B)  C2H3O2- (aq) + H+ (aq) F1F1F1S1F1F1F10 H2C2H3O2+ (aq) 
C)  KC2H3O2 (aq) + H+ (aq) F1F1F1S1F1F1F10 KHC2H3O2 (aq) 
D)  C2H3O2- (aq) + H+ (aq) F1F1F1S1F1F1F10 HC2H3O2 (aq)

Question 6

Which combination would make the MOST effective buffer solution?

Accepted Answer

A)  0.1 M H2CO3 and 1.0 M NaHCO3 
B)  0.1 M H2CO3 and 0.1 M NaHCO3 
C)  0.1 M H2CO3 and 2.0 M NaHCO3 
D)  0.15 M H2CO3 and 0.015 M NaHCO3 
A)  0.1 M H2CO3 and 1.0 M NaHCO3 
B)  0.1 M H2CO3 and 0.1 M NaHCO3 
C)  0.1 M H2CO3 and 2.0 M NaHCO3 
D)  0.15 M H2CO3 and 0.015 M NaHCO3

Question 7

A 50.0-mL sample of H2SO4 is neutralized with NaOH solution having a concentration of 2.00 M. If 35.5 mL of NaOH are required to complete the neutralization, what is the concentration of the sulfuric acid solution?

Accepted Answer

A)  0.710 M 
B)  2.84 M 
C)  1.41 M 
D)  0.355 M 
A)  0.710 M 
B)  2.84 M 
C)  1.41 M 
D)  0.355 M

Question 8

Acid and base combine to form:

Accepted Answer

A)  salt and water. 
B)  gas and water. 
C)  salt and gas. 
D)  only ionic compounds. 
A)  salt and water. 
B)  gas and water. 
C)  salt and gas. 
D)  only ionic compounds.

Question 9

A 50.0-mL sample of HNO3 is neutralized by reaction with 120.0 mL of 2.50 M NaOH. What is the concentration of HNO3 in the unknown sample?

Accepted Answer

A)  6.00 M 
B)  1.04 M 
C)  0.960 M 
D)  1.55 M 
A)  6.00 M 
B)  1.04 M 
C)  0.960 M 
D)  1.55 M

Question 10

Which acid can undergo up to a second ionization?

Accepted Answer

A)  H2SO4 (aq) 
B)  HNO3 (aq) 
C)  HNO2 (aq) 
D)  HCl (aq) 
A)  H2SO4 (aq) 
B)  HNO3 (aq) 
C)  HNO2 (aq) 
D)  HCl (aq)

Acids that partially ionize in water are:

A buffer solution contains a mixture of carbonic acid (H₂CO₃) and potassium hydrogen carbonate (KHCO₃). What reaction will take place if H⁺ is added to this solution?

Identify the Brønsted base in this reaction. H₂O (l) + HNO₃ (aq)  H₃O⁺ (aq) + NO₃^- (aq)

Which combination would make a buffer solution?

A buffer solution contains a mixture of acetic acid (HC₂H₃O₂) and potassium acetate (KC₂H₃O₂). What reaction will take place if H⁺ is added to this solution?

Which combination would make the MOST effective buffer solution?

A 50.0-mL sample of H₂SO₄ is neutralized with NaOH solution having a concentration of 2.00 M. If 35.5 mL of NaOH are required to complete the neutralization, what is the concentration of the sulfuric acid solution?

Acid and base combine to form:

A 50.0-mL sample of HNO₃ is neutralized by reaction with 120.0 mL of 2.50 M NaOH. What is the concentration of HNO₃ in the unknown sample?

Which acid can undergo up to a second ionization?

Foundations

Measurement

Atoms

Light and Electronic Structure

Chemical Bonds Compounds

Chemical Reactions

Mass Stoichiometry

Energy

Covalent Bonding and Molecules

Solids, Liquids, and Gases

Solutions

Reaction Rates Equilibrium

Oxidation-Reduction Reactions

Organic Chemistry and Biomolecules

Nuclear Chemistry

Filters

Exam 12: Acids Bases

Acids that partially ionize in water are:

A buffer solution contains a mixture of carbonic acid (H2CO3) and potassium hydrogen carbonate (KHCO3). What reaction will take place if H+ is added to this solution?

Identify the Brønsted base in this reaction. H2O (l) + HNO3 (aq)  H3O+ (aq) + NO3- (aq)

Which combination would make a buffer solution?

A buffer solution contains a mixture of acetic acid (HC2H3O2) and potassium acetate (KC2H3O2). What reaction will take place if H+ is added to this solution?

Which combination would make the MOST effective buffer solution?

A 50.0-mL sample of H2SO4 is neutralized with NaOH solution having a concentration of 2.00 M. If 35.5 mL of NaOH are required to complete the neutralization, what is the concentration of the sulfuric acid solution?

Acid and base combine to form:

A 50.0-mL sample of HNO3 is neutralized by reaction with 120.0 mL of 2.50 M NaOH. What is the concentration of HNO3 in the unknown sample?

Which acid can undergo up to a second ionization?

Foundations

Measurement

Atoms

Light and Electronic Structure

Chemical Bonds Compounds

Chemical Reactions

Mass Stoichiometry

Energy

Covalent Bonding and Molecules

Solids, Liquids, and Gases

Solutions

Reaction Rates Equilibrium

Oxidation-Reduction Reactions

Organic Chemistry and Biomolecules

Nuclear Chemistry

Filters

A buffer solution contains a mixture of carbonic acid (H₂CO₃) and potassium hydrogen carbonate (KHCO₃). What reaction will take place if H⁺ is added to this solution?

Identify the Brønsted base in this reaction. H₂O (l) + HNO₃ (aq)  H₃O⁺ (aq) + NO₃^- (aq)

A buffer solution contains a mixture of acetic acid (HC₂H₃O₂) and potassium acetate (KC₂H₃O₂). What reaction will take place if H⁺ is added to this solution?

A 50.0-mL sample of H₂SO₄ is neutralized with NaOH solution having a concentration of 2.00 M. If 35.5 mL of NaOH are required to complete the neutralization, what is the concentration of the sulfuric acid solution?

A 50.0-mL sample of HNO₃ is neutralized by reaction with 120.0 mL of 2.50 M NaOH. What is the concentration of HNO₃ in the unknown sample?