Question 1

Identify the conjugate base of HCO3- in the reaction CO32- + HSO4- 3- in the reaction CO32- + HSO4-   HCO3- + SO42- A) HSO4- B) CO32- C) OH- D) H3O+ E) SO42-" class="answers-bank-image d-inline" rel="preload" > HCO3- + SO42-

Accepted Answer

A)  HSO4-
B)  CO32-
C)  OH-
D)  H3O+
E)  SO42-

Question 2

In comparing three solutions with pH's of 2.0, 4.8, and 5.2, which is most acidic?

Accepted Answer

The soluti...

Question 3

Calculate the hydrogen ion concentration in a solution having a pH of 4.60.

Accepted Answer

A)  4.0 * 10-3 M
B)  4.0 * 10-9 M
C)  4.0 * 10-10 M
D)  2.5 * 10-5 M
E)  2.5 * 10-4 M

Question 4

Will a 0.1 M solution of Na2HPO4(aq)be acidic, basic, or neutral?

Accepted Answer

Question 5

Identify the conjugate acid of SO42- in the reaction CO32- + HSO4- 42- in the reaction CO32- + HSO4-   HCO3- + SO42- A) CO32- B) HSO4- C) OH- D) H3O+ E) SO42-" class="answers-bank-image d-inline" rel="preload" > HCO3- + SO42-

Accepted Answer

A)  CO32-
B)  HSO4-
C)  OH-
D)  H3O+
E)  SO42-

Question 6

HCN is classified as a weak acid in water. What does this classification mean?

Accepted Answer

A relatively small f...

Question 7

Which of these lists of molecules is arranged in order of increasing acid strength?

Accepted Answer

A)  H2S 2O 2Se
B)  H2O 2S 2Se
C)  H2Se 2O 2S
D)  H2S 2Se 2O
E)  H2O 2Se 2S

Question 8

The pH of tomato juice is about 4.5. Calculate the concentration of hydrogen ions in this juice.

Accepted Answer

A)  3.* 10-10 M
B)  3.* 10-5 M
C)  5.* 10-4 M
D)  4.M
E)  3.* 1010 M

Question 9

If the pH of liquid bleach is 12.0, what is the hydroxide ion concentration in this solution?

Accepted Answer

1 * 10<sup...

Question 10

Identify the conjugate base of CH3COOH in the reaction CH3COOH + HSO4- 3COOH in the reaction CH3COOH + HSO4-   H2SO4 + CH3COO- A) HSO4- B) SO42- C) CH3COO- D) H2SO4 E) OH-" class="answers-bank-image d-inline" rel="preload" > H2SO4 + CH3COO-

Accepted Answer

A)  HSO4-
B)  SO42-
C)  CH3COO-
D)  H2SO4
E)  OH-

Question 11

Acid strength increases in the series: HCN 4-. Which of these species is the strongest base?

Accepted Answer

A)  H2SO4
B)  SO42-
C)  F-
D)  CN -
E)  HSO4-

Question 12

Which of these species will act as a Lewis acid?

Accepted Answer

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

Question 13

Hard water deposits (calcium carbonate) have built up around your bathroom sink. Which one of these substances would be most effective in dissolving the deposits?

Accepted Answer

A)  ammonia
B)  bleach (sodium hypochlorite) 
C)  lye (sodium hydroxide) 
D)  vinegar (acetic acid)

Question 14

Calculate the H+ ion concentration in a solution with a pH of 3.85.

Accepted Answer

1.4 * 10<s...

Question 15

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 * 104

Question 16

Acid strength decreases in the series HI > HSO4- > HF > HCN. Which of these anions is the weakest base?

Accepted Answer

A)  I-
B)  SO42-
C)  F-
D)  CN-

Question 17

Arrange the acids H2Se, H2Te, and H2S in order of increasing acid strength.

Accepted Answer

A)  H2S 2Se 2Te
B)  H2S 2Te 2Se
C)  H2Te 2S 2Se
D)  H2Se 2S 2Te
E)  H2Se 2Te 2S

Question 18

A solution containing NH3(aq)and NH4Cl(aq)has a pH of 9.5.What is the [NH3]/[NH4+] ratio in this solution? (For ammonia, Kb = 1.8 * 10-5.)

Accepted Answer

The answer of A solution containing NH3(aq)and NH4Cl(aq)has a pH...

Question 19

The pH of a certain solution is 2.0. How many H+(aq) ions are there in 1.0 L of the solution?

Accepted Answer

A)  0.01 ions
B)  100 ions
C)  2 ions
D)  6.* 1021 ions
E)  6.* 1023 ions

Question 20

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

Accepted Answer

1 * 10<sup...

Exam 15: Acids and Bases

Which of these lists of molecules is arranged in order of increasing acid strength?

Correct AnswerverifiedShow Answer

A solution containing NH3(aq)and NH4Cl(aq)has a pH of 9.5.What is the [NH3]/[NH4+] ratio in this solution? (For ammonia, Kb = 1.8 * 10-5.)

Correct AnswerverifiedShow Answer

Acid strength decreases in the series HI > HSO4- > HF > HCN. Which of these anions is the weakest base?

Correct AnswerverifiedShow Answer

Acid strength increases in the series: HCN < HF < HSO4-. Which of these species is the strongest base?

Correct AnswerverifiedShow Answer

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

Correct Answerverified1 * 10View AnswerShow Answer

Identify the conjugate acid of SO42- in the reaction CO32- + HSO4- HCO3- + SO42-

Correct AnswerverifiedShow Answer

Identify the conjugate base of CH3COOH in the reaction CH3COOH + HSO4- H2SO4 + CH3COO-

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Calculate the H+ ion concentration in a solution with a pH of 3.85.

Correct Answerverified1.4 * 10View AnswerShow Answer

The pH of a certain solution is 2.0. How many H+(aq) ions are there in 1.0 L of the solution?

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

The pH of tomato juice is about 4.5. Calculate the concentration of hydrogen ions in this juice.

Correct AnswerverifiedShow Answer

In comparing three solutions with pH's of 2.0, 4.8, and 5.2, which is most acidic?

Correct AnswerverifiedThe soluti...View AnswerShow Answer

Which of these species will act as a Lewis acid?

Correct AnswerverifiedShow Answer

Identify the conjugate base of HCO3- in the reaction CO32- + HSO4- HCO3- + SO42-

Correct AnswerverifiedShow Answer

Calculate the hydrogen ion concentration in a solution having a pH of 4.60.

Correct AnswerverifiedShow Answer

HCN is classified as a weak acid in water. What does this classification mean?

Correct AnswerverifiedA relatively small f...View AnswerShow Answer

Hard water deposits (calcium carbonate) have built up around your bathroom sink. Which one of these substances would be most effective in dissolving the deposits?

Correct AnswerverifiedShow Answer

If the pH of liquid bleach is 12.0, what is the hydroxide ion concentration in this solution?

Correct Answerverified1 * 10View AnswerShow Answer

Arrange the acids H2Se, H2Te, and H2S in order of increasing acid strength.

Correct AnswerverifiedShow Answer

Will a 0.1 M solution of Na2HPO4(aq)be acidic, basic, or neutral?

Correct AnswerverifiedShow Answer

Correct Answer
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A solution containing NH₃(aq)and NH₄Cl(aq)has a pH of 9.5.What is the [NH₃]/[NH₄⁺] ratio in this solution? (For ammonia, K_b = 1.8 * 10^-5.)

Correct Answer
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Acid strength decreases in the series HI > HSO₄^- > HF > HCN. Which of these anions is the weakest base?

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Acid strength increases in the series: HCN < HF < HSO₄^-. Which of these species is the strongest base?

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1 * 10
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Identify the conjugate acid of SO₄^2- in the reaction CO₃^2- + HSO₄^- HCO₃^- + SO₄^2-

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Identify the conjugate base of CH₃COOH in the reaction CH₃COOH + HSO₄^- H₂SO₄ + CH₃COO^-

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Calculate the H⁺ ion concentration in a solution with a pH of 3.85.

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1.4 * 10
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The pH of a certain solution is 2.0. How many H⁺(aq) ions are there in 1.0 L of the solution?

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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
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The soluti...
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Identify the conjugate base of HCO₃^- in the reaction CO₃^2- + HSO₄^- HCO₃^- + SO₄^2-

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A relatively small f...
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1 * 10
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Arrange the acids H₂Se, H₂Te, and H₂S in order of increasing acid strength.

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Will a 0.1 M solution of Na₂HPO₄(aq)be acidic, basic, or neutral?

Correct Answer
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