Question 1

Calculate the pH of a 0.15 M solution of HOI (Ka = 2.3 x 10-11)

Accepted Answer

Question 2

Suppose that ammonia, applied to a field as a fertilizer, is washed into a farm pond containing 3.0 × 106 L of water.If the pH of this pond is found to be 9.81, what volume of liquid ammonia found its way into the pond? [Given: Kb(NH3) = 1.8 × 10-5; the density of liquid ammonia is 0.771 g/cm3]

Accepted Answer

A)  15 L
B)  25 L
C)  11 L
D)  19 L
E)  320 LF) None of the above
G) A) and E)

Question 3

The pH of coffee is approximately 5.0.How many times greater is the [H3O+] in coffee than in tap water having a pH of 8.0?

Accepted Answer

A)  0.62
B)  1.6
C)  30
D)  1,000
E)  1.0 × 104F) A) and B)
G) C) and D)

Question 4

When 2.0 × 10-2 mole of nicotinic acid (a monoprotic acid)is dissolved in 350.mL of water, the pH is 3.05.What is the Ka of nicotinic acid?

Accepted Answer

Question 5

Calculate the concentration of malonate ion (C3H2O42-) in a 0.200 M solution of malonic acid (C3H4O4) .[For malonic acid, Ka1 = 1.4 × 10-3, Ka2 = 2.0 × 10-6.]

Accepted Answer

A)  2.8 × 10-4 M
B)  0.016 M
C)  1.8 × 10-4 M
D)  1.4 × 10-3 M
E)  2.0 × 10-6 MF) A) and B)
G) B) and C)

Question 6

Morphine, C17H19NO3, is often used to control severe post-operative pain.What is the pH of the solution made by dissolving 25.0 mg of morphine in 100.mL of water? (For morphine, Kb = 1.62 × 10-6.)

Accepted Answer

A)  9.57
B)  9.08
C)  3.79
D)  9.87
E)  4.43F) A) and B)
G) C) and D)

Question 7

Al(OH)3 is an amphoteric hydroxide.Write a balanced ionic equation to show its reaction with KOH.

Accepted Answer

Al(OH)₃ + K...

Question 8

If the pH of pure water is 7.0, what is the hydroxide ion concentration in pure water?

Accepted Answer

The answer of If the pH of pure water is...

Question 9

Calculate the pH of a 1.6 M KOH solution.

Accepted Answer

A)  1.60
B)  -0.20
C)  0.20
D)  14.20
E)  13.80F) B) and C)
G) A) and B)

Question 10

Which of the following solutions is basic?

Accepted Answer

A)  [H3O+] = 1.0 x 10-10 M
B)  [OH-] = 1.0 x 10-10 M
C)  [H3O+] > 1.0 x 10-7 M
D)  [OH-] -10 M
E)  [OH-] = 1.0 x 10-7 MF) C) and E)
G) A) and D)

Question 11

Which one of these net ionic equations represents the reaction of a strong acid with a strong base?

Accepted Answer

A)  H+(aq) + OH-(aq)   →\rarr→ H2O(aq) 
B)  H+(aq) + CH3NH2(aq)   →\rarr→ CH3NH3+(aq) 
C)  OH-(aq) + HCN(aq)   →\rarr→  H2O(aq) + CN-(aq) 
D)  HCN(aq) + CH3NH2(aq)   →\rarr→ CH3NH3+(aq) + CN-(aq)  E) A) and B)
F) None of the above

Question 12

The pH of coffee is approximately 5.0.How many times greater is the [H+] in coffee than in neutral water?

Accepted Answer

A)  200
B)  100
C)  5.0
D)  1.4
E)  0.01F) B) and D)
G) B) and C)

Question 13

Which one of these salts will form a neutral solution on dissolving in water?

Accepted Answer

A)  NaCl
B)  KNO2
C)  NaCN
D)  NH4NO3
E)  FeCl3F) A) and D)
G) B) and D)

Question 14

When comparing acid strength of binary acids HX, as X varies within a particular group of the periodic table, which one of these factors dominates in affecting the acid strength?

Accepted Answer

A)  bond strength
B)  electron withdrawing effects
C)  percent ionic character of the H-X bond
D)  solubility
E)  Le Châtelier's principleF) B) and C)
G) A) and B)

Question 15

Given the following Kb values, which cation is the strongest acid? b values, which cation is the strongest acid?   A) NH4+ B) C2H5NH3+ C) C5H6N+ D) [C8H11N4O2]+ E) [NH2NH3CO]+" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  NH4+
B)  C2H5NH3+
C)  C5H6N+
D)  [C8H11N4O2]+
E)  [NH2NH3CO]+F) B) and E)
G) B) and C)

Question 16

For maleic acid, HOOCCH=CHCOOH, Ka1 = 1.42 × 10-2 and Ka2 = 8.57 × 10-7. What is the concentration of maleate ion (-OOCCH=CHCOO-) in a 0.150 M aqueous solution of maleic acid?

Accepted Answer

A)  8.57 × 10-7 M
B)  2.79 × 10-6 M
C)  1.86 × 10-5 M
D)  4.60 × 10-2 M
E)  1.19 × 10-1 MF) B) and D)
G) A) and D)

Question 17

Which one of these salts will form a basic solution upon dissolving in water?

Accepted Answer

A)  NaI
B)  NaF
C)  NH4NO3
D)  LiBr
E)  Cr(NO3) 3F) C) and D)
G) A) and E)

Question 18

Which one of these equations represents the reaction of a weak acid with a strong base?

Accepted Answer

A)  H+(aq) + OH-(aq)   →\rarr→ H2O(aq) 
B)  H+(aq) + CH3NH2(aq)   →\rarr→ CH3NH3+(aq) 
C)  OH-(aq) + HCN(aq)   →\rarr→ H2O(aq) + CN-(aq) 
D)  HCN(aq) + CH3NH2(aq)   →\rarr→ CH3NH3+(aq) + CN-(aq)  E) All of the above
F) A) and D)

Exam 15: Acids and Bases

Correct Answer
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Calculate the pH of a 1.6 M KOH solution.

Correct Answer
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When 2.0 × 10^-2 mole of nicotinic acid (a monoprotic acid)is dissolved in 350.mL of water, the pH is 3.05.What is the K_a of nicotinic acid?

Correct Answer
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Given the following K_b values, which cation is the strongest acid?

Correct Answer
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Morphine, C₁₇H₁₉NO₃, is often used to control severe post-operative pain.What is the pH of the solution made by dissolving 25.0 mg of morphine in 100.mL of water? (For morphine, K_b = 1.62 × 10^-6.)

Correct Answer
verified

Which of the following solutions is basic?

Correct Answer
verified

Which one of these salts will form a basic solution upon dissolving in water?

Correct Answer
verified

The pH of coffee is approximately 5.0.How many times greater is the [H⁺] in coffee than in neutral water?

Correct Answer
verified

The pH of coffee is approximately 5.0.How many times greater is the [H₃O⁺] in coffee than in tap water having a pH of 8.0?

Correct Answer
verified

When comparing acid strength of binary acids HX, as X varies within a particular group of the periodic table, which one of these factors dominates in affecting the acid strength?

Correct Answer
verified

Al(OH)₃ is an amphoteric hydroxide.Write a balanced ionic equation to show its reaction with KOH.

Correct Answer
verified
Al(OH)₃ + K...
View Answer

For maleic acid, HOOCCH=CHCOOH, K_a1 = 1.42 × 10^-2 and K_a2 = 8.57 × 10^-7. What is the concentration of maleate ion (^-OOCCH=CHCOO^-) in a 0.150 M aqueous solution of maleic acid?

Correct Answer
verified

If the pH of pure water is 7.0, what is the hydroxide ion concentration in pure water?

Correct Answer
verified

Calculate the pH of a 0.15 M solution of HOI (K_a = 2.3 x 10^-11)

Correct Answer
verified

Calculate the concentration of malonate ion (C₃H₂O₄^2-) in a 0.200 M solution of malonic acid (C₃H₄O₄) .[For malonic acid, K_a1 = 1.4 × 10^-3, K_a2 = 2.0 × 10^-6.]

Correct Answer
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Which one of these salts will form a neutral solution on dissolving in water?

Correct Answer
verified

Which one of these equations represents the reaction of a weak acid with a strong base?

Correct Answer
verified

Which one of these net ionic equations represents the reaction of a strong acid with a strong base?

Correct Answer
verified

Exam 15: Acids and Bases

Suppose that ammonia, applied to a field as a fertilizer, is washed into a farm pond containing 3.0 × 106 L of water.If the pH of this pond is found to be 9.81, what volume of liquid ammonia found its way into the pond? [Given: Kb(NH3) = 1.8 × 10-5; the density of liquid ammonia is 0.771 g/cm3]

Correct AnswerverifiedShow Answer

Calculate the pH of a 1.6 M KOH solution.

Correct AnswerverifiedShow Answer

When 2.0 × 10-2 mole of nicotinic acid (a monoprotic acid)is dissolved in 350.mL of water, the pH is 3.05.What is the Ka of nicotinic acid?

Correct AnswerverifiedShow Answer

Given the following Kb values, which cation is the strongest acid?

Correct AnswerverifiedShow Answer

Morphine, C17H19NO3, is often used to control severe post-operative pain.What is the pH of the solution made by dissolving 25.0 mg of morphine in 100.mL of water? (For morphine, Kb = 1.62 × 10-6.)

Correct AnswerverifiedShow Answer

Which of the following solutions is basic?

Correct AnswerverifiedShow Answer

Which one of these salts will form a basic solution upon dissolving in water?

Correct AnswerverifiedShow Answer

The pH of coffee is approximately 5.0.How many times greater is the [H+] in coffee than in neutral water?

Correct AnswerverifiedShow Answer

The pH of coffee is approximately 5.0.How many times greater is the [H3O+] in coffee than in tap water having a pH of 8.0?

Correct AnswerverifiedShow Answer

When comparing acid strength of binary acids HX, as X varies within a particular group of the periodic table, which one of these factors dominates in affecting the acid strength?

Correct AnswerverifiedShow Answer

Al(OH)3 is an amphoteric hydroxide.Write a balanced ionic equation to show its reaction with KOH.

Correct AnswerverifiedAl(OH)3 + K...View AnswerShow Answer

For maleic acid, HOOCCH=CHCOOH, Ka1 = 1.42 × 10-2 and Ka2 = 8.57 × 10-7. What is the concentration of maleate ion (-OOCCH=CHCOO-) in a 0.150 M aqueous solution of maleic acid?

Correct AnswerverifiedShow Answer

If the pH of pure water is 7.0, what is the hydroxide ion concentration in pure water?

Correct AnswerverifiedShow Answer

Calculate the pH of a 0.15 M solution of HOI (Ka = 2.3 x 10-11)

Correct AnswerverifiedShow Answer

Calculate the concentration of malonate ion (C3H2O42-) in a 0.200 M solution of malonic acid (C3H4O4) .[For malonic acid, Ka1 = 1.4 × 10-3, Ka2 = 2.0 × 10-6.]

Correct AnswerverifiedShow Answer

Which one of these salts will form a neutral solution on dissolving in water?

Correct AnswerverifiedShow Answer

Which one of these equations represents the reaction of a weak acid with a strong base?

Correct AnswerverifiedShow Answer

Which one of these net ionic equations represents the reaction of a strong acid with a strong base?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

When 2.0 × 10^-2 mole of nicotinic acid (a monoprotic acid)is dissolved in 350.mL of water, the pH is 3.05.What is the K_a of nicotinic acid?

Correct Answer
verified

Given the following K_b values, which cation is the strongest acid?

Correct Answer
verified

Morphine, C₁₇H₁₉NO₃, is often used to control severe post-operative pain.What is the pH of the solution made by dissolving 25.0 mg of morphine in 100.mL of water? (For morphine, K_b = 1.62 × 10^-6.)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The pH of coffee is approximately 5.0.How many times greater is the [H⁺] in coffee than in neutral water?

Correct Answer
verified

The pH of coffee is approximately 5.0.How many times greater is the [H₃O⁺] in coffee than in tap water having a pH of 8.0?

Correct Answer
verified

Correct Answer
verified

Al(OH)₃ is an amphoteric hydroxide.Write a balanced ionic equation to show its reaction with KOH.

Correct Answer
verified
Al(OH)₃ + K...
View Answer

For maleic acid, HOOCCH=CHCOOH, K_a1 = 1.42 × 10^-2 and K_a2 = 8.57 × 10^-7. What is the concentration of maleate ion (^-OOCCH=CHCOO^-) in a 0.150 M aqueous solution of maleic acid?

Correct Answer
verified

Correct Answer
verified

Calculate the pH of a 0.15 M solution of HOI (K_a = 2.3 x 10^-11)

Correct Answer
verified

Calculate the concentration of malonate ion (C₃H₂O₄^2-) in a 0.200 M solution of malonic acid (C₃H₄O₄) .[For malonic acid, K_a1 = 1.4 × 10^-3, K_a2 = 2.0 × 10^-6.]

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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