Question 1

Which of the following is the strongest acid?

Accepted Answer

A)  CH 3COOH
B)  HF
C)  H 3PO 4
D)  H 2SO 3
E)  HIF) A) and B)
G) A) and E)

Question 2

Hydrated metal ions in aqueous solution can act as Brønsted-Lowry acids.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following aqueous liquids will have the highest pH?

Accepted Answer

A)  0.1 M CH 3COOH, p K a = 4.7
B)  0.1 M CuCl 2, p K a = 7.5
C)  0.1 M H 3C 6H 5O 7, p K a = 3.1
D)  0.1 M ZnCl 2, p K a = 9.0
E)  Pure waterF) A) and D)
G) B) and D)

Question 4

Which of the following aqueous systems has the highest pH?

Accepted Answer

A)  0.1 M HA , p K a = 11.89
B)  0.1 M HMO, p K a = 8.23
C)  0.1 M HA , p K a = 4.55
D)  0.1 M HBO, p K a = 2.43
E)  Pure waterF) A) and D)
G) A) and C)

Question 5

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 K a and K b for the species in solution must be known before a prediction can be made.F) B) and D)
G) B) and C)

Question 6

When 14.7 mL of aqueous HBr (a strong acid)  was added to water, 0.482 L of a solution with a pH of 4.23 was produced. What was the molarity of the original HBr solution?

Accepted Answer

A)  1.9 × 10 −3 M
B)  140 M
C)  0.288 M
D)  0.13 M
E)  None of these choices are correct.F) C) and E)
G) All of the above

Question 7

Arsenic acid, H3AsO4, is used industrially to manufacture insecticides. Arsenic acid is a polyprotic acid with K1 = 2.5 × 10−4, K2 = 5.6 × 10−8, and K3 = 3 × 10−13. What is the concentration of the HAsO42− in a solution whose initial arsenic acid concentration was 0.35 M?

Accepted Answer

A)  9.4 × 10 −3  M
B)  2.5 × 10 −4  M
C)  8.8 × 10 −5  M
D)  5.6 × 10 −8  M
E)  None of these choices are correct.F) All of the above
G) None of the above

Question 8

What is the value of Ka for the methylammonium ion, CH3NH3+? Kb(CH3NH2)  = 4.4 × 10−4

Accepted Answer

A)  4.4 × 10 −4
B)  4.8 × 10 −6
C)  4.4 × 10 −10
D)  2.3 × 10 −11
E)  4.4 × 10 −18F) B) and E)
G) D) and E)

Question 9

What is the pOH of a 0.0085 M KOH solution?

Accepted Answer

A)  2.07
B)  4.77
C)  9.23
D)  11.93
E)  None of these choices are correct.F) A) and E)
G) C) and D)

Question 10

All Brønsted-Lowry bases contain the hydroxide ion, OH−.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following aqueous liquids is the most acidic?

Accepted Answer

A)  0.1 M Al(NO 3) 3, K a = 1 × 10 −5
B)  0.1 M Be(NO 3) 2, K a = 4 × 10 −6
C)  0.1 M Pb(NO 3) 2, K a = 3 × 10 −8
D)  0.1 M Ni(NO 3) 2, K a = 1 × 10 −10
E)  Pure waterF) A) and B)
G) All of the above

Question 12

Calcium oxide, CaO, also known as quick lime, will react with carbon dioxide to form calcium carbonate, CaCO3. Which species, if any, acts as a Lewis acid in the reaction?

Accepted Answer

A)  Ca 2+
B)  O 2−
C)  CO 2
D)  CaCO 3
E)  None of these choices are correct.F) A) and B)
G) B) and C)

Question 13

Which of the following is the strongest acid?

Accepted Answer

A)  CH 3COOH
B)  HF
C)  H 3PO 4
D)  H 2SO 3
E)  H 2SO 4F) A) and C)
G) D) and E)

Question 14

If a strong acid such as HCl is diluted sufficiently with water, the pH will be higher than 7.

Accepted Answer

A) True 
 B)False

Question 15

A 0.050 M solution of the weak acid HA has [H3O+] = 3.77 × 10−4 M. What is the Ka for the acid?

Accepted Answer

A)  7.5 × 10 −3 M
B)  2.8 × 10 −6 M
C)  7.0 × 10 −7 M
D)  7.0 × 10 −8 M
E)  2.6 × 10 −11 MF) B) and E)
G) B) and D)

Question 16

What is the pH of a 0.050 M LiOH solution?

Accepted Answer

A)  
B)  1.30
C)  3.00
D)  11.00
E)  12.70F) A) and C)
G) A) and D)

Question 17

Picric acid has been used in the leather industry and in etching copper. However, its laboratory use has been restricted because it dehydrates on standing and can become shock sensitive. It has an acid dissociation constant of 0.42. What is the [H3O+] for a 0.20 M solution of picric acid?

Accepted Answer

A)  0.022 M
B)  0.052 M
C)  0.15 M
D)  0.29 M
E)  None of these choices are correct.F) B) and C)
G) A) and E)

Question 18

Which one of the following substances will give an aqueous solution of pH closest to 7?

Accepted Answer

A)  KNO 3
B)  CO 2
C)  NH 4I
D)  NH 3
E)  CH 3NH 2F) A) and C)
G) All of the above

Question 19

A solution is prepared by adding 0.10 mol of sodium fluoride, NaF, 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 acidic.
D)  The concentrations of fluoride ions and sodium ions will be identical.
E)  The concentration of fluoride ions will be greater than the concentration of sodium ions.F) D) and E)
G) A) and D)

Question 20

Select the strongest acid from the following list.

Accepted Answer

A)  HBrO 4
B)  HClO
C)  HBrO 2
D)  HBrO
E)  HIOF) C) and E)
G) A) and B)

Exam 18: Acid-Base Equilibria

Hydrated metal ions in aqueous solution can act as Brønsted-Lowry acids.

Correct Answer
verified

Which of the following is the strongest acid?

Correct Answer
verified

If a strong acid such as HCl is diluted sufficiently with water, the pH will be higher than 7.

Correct Answer
verified

All Brønsted-Lowry bases contain the hydroxide ion, OH⁻.

Correct Answer
verified

Which of the following aqueous liquids will have the highest pH?

Correct Answer
verified

Which of the following aqueous liquids is the most acidic?

Correct Answer
verified

Which of the following is the strongest acid?

Correct Answer
verified

What is the value of K_a for the methylammonium ion, CH₃NH₃⁺? K_b(CH₃NH₂) = 4.4 × 10⁻⁴

Correct Answer
verified

A 0.050 M solution of the weak acid HA has [H₃O⁺] = 3.77 × 10⁻⁴ M. What is the K_afor the acid?

Correct Answer
verified

Which of the following aqueous systems has the highest pH?

Correct Answer
verified

Which one of the following substances will give an aqueous solution of pH closest to 7?

Correct Answer
verified

When 14.7 mL of aqueous HBr (a strong acid) was added to water, 0.482 L of a solution with a pH of 4.23 was produced. What was the molarity of the original HBr solution?

Correct Answer
verified

What is the pOH of a 0.0085 M KOH solution?

Correct Answer
verified

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?

Correct Answer
verified

Calcium oxide, CaO, also known as quick lime, will react with carbon dioxide to form calcium carbonate, CaCO₃. Which species, if any, acts as a Lewis acid in the reaction?

Correct Answer
verified

A solution is prepared by adding 0.10 mol of sodium fluoride, NaF, to 1.00 L of water. Which statement about the solution is correct?

Correct Answer
verified

What is the pH of a 0.050 M LiOH solution?

Correct Answer
verified

Picric acid has been used in the leather industry and in etching copper. However, its laboratory use has been restricted because it dehydrates on standing and can become shock sensitive. It has an acid dissociation constant of 0.42. What is the [H₃O⁺] for a 0.20 M solution of picric acid?

Correct Answer
verified

Correct Answer
verified

Select the strongest acid from the following list.

Correct Answer
verified

Exam 18: Acid-Base Equilibria

Hydrated metal ions in aqueous solution can act as Brønsted-Lowry acids.

Correct AnswerverifiedShow Answer

Which of the following is the strongest acid?

Correct AnswerverifiedShow Answer

If a strong acid such as HCl is diluted sufficiently with water, the pH will be higher than 7.

Correct AnswerverifiedShow Answer

All Brønsted-Lowry bases contain the hydroxide ion, OH−.

Correct AnswerverifiedShow Answer

Which of the following aqueous liquids will have the highest pH?

Correct AnswerverifiedShow Answer

Which of the following aqueous liquids is the most acidic?

Correct AnswerverifiedShow Answer

Which of the following is the strongest acid?

Correct AnswerverifiedShow Answer

What is the value of Ka for the methylammonium ion, CH3NH3+? Kb(CH3NH2) = 4.4 × 10−4

Correct AnswerverifiedShow Answer

A 0.050 M solution of the weak acid HA has [H3O+] = 3.77 × 10−4 M. What is the Ka for the acid?

Correct AnswerverifiedShow Answer

Which of the following aqueous systems has the highest pH?

Correct AnswerverifiedShow Answer

Which one of the following substances will give an aqueous solution of pH closest to 7?

Correct AnswerverifiedShow Answer

When 14.7 mL of aqueous HBr (a strong acid) was added to water, 0.482 L of a solution with a pH of 4.23 was produced. What was the molarity of the original HBr solution?

Correct AnswerverifiedShow Answer

What is the pOH of a 0.0085 M KOH solution?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Calcium oxide, CaO, also known as quick lime, will react with carbon dioxide to form calcium carbonate, CaCO3. Which species, if any, acts as a Lewis acid in the reaction?

Correct AnswerverifiedShow Answer

A solution is prepared by adding 0.10 mol of sodium fluoride, NaF, to 1.00 L of water. Which statement about the solution is correct?

Correct AnswerverifiedShow Answer

What is the pH of a 0.050 M LiOH solution?

Correct AnswerverifiedShow Answer

Picric acid has been used in the leather industry and in etching copper. However, its laboratory use has been restricted because it dehydrates on standing and can become shock sensitive. It has an acid dissociation constant of 0.42. What is the [H3O+] for a 0.20 M solution of picric acid?

Correct AnswerverifiedShow Answer

Arsenic acid, H3AsO4, is used industrially to manufacture insecticides. Arsenic acid is a polyprotic acid with K1 = 2.5 × 10−4, K2 = 5.6 × 10−8, and K3 = 3 × 10−13. What is the concentration of the HAsO42− in a solution whose initial arsenic acid concentration was 0.35 M?

Correct AnswerverifiedShow Answer

Select the strongest acid from the following list.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

All Brønsted-Lowry bases contain the hydroxide ion, OH⁻.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the value of K_a for the methylammonium ion, CH₃NH₃⁺? K_b(CH₃NH₂) = 4.4 × 10⁻⁴

Correct Answer
verified

A 0.050 M solution of the weak acid HA has [H₃O⁺] = 3.77 × 10⁻⁴ M. What is the K_afor the acid?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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?

Correct Answer
verified

Calcium oxide, CaO, also known as quick lime, will react with carbon dioxide to form calcium carbonate, CaCO₃. Which species, if any, acts as a Lewis acid in the reaction?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Picric acid has been used in the leather industry and in etching copper. However, its laboratory use has been restricted because it dehydrates on standing and can become shock sensitive. It has an acid dissociation constant of 0.42. What is the [H₃O⁺] for a 0.20 M solution of picric acid?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified