Question 1

When solid sodium hydroxide is dissolved in water which of the following species is not present in the solution?

Accepted Answer

A)   H2O(l) 
B)   Na+(aq) 
C)   OH-(aq) 
D)   None, they are all present.E) None of the above
F) B) and D)

Question 2

The species H+ can be called which of the following?

Accepted Answer

A)   hydrogen ion
B)   proton
C)   either a or b
D)   neither a nor bE) C) and D)
F) A) and D)

Question 3

Which of the following is a cause of alkalosis?

Accepted Answer

A)   a poor diet
B)   hyperventilation
C)   hypoventilation
D)   intense exerciseE) C) and D)
F) B) and D)

Question 4

Acetic acid, CH3COOH, is a stronger acid than the ammonium ion, NH4+. When acetic acid reacts with ammonia, NH3, what species are present in the solution in the largest amount?

Accepted Answer

A)   acetic acid, CH3COOH and ammonia, NH3
B)   acetic acid, CH3COOH, and ammonium, NH4+
C)   acetate ion, CH3COO-, and ammonia, NH3
D)   acetate ion, CH3COO-, and ammonium ion, NH4+E) A) and C)
F) B) and C)

Question 5

The pKa of hydrocyanic acid is 9.31. What is the Ka of hydrocyanic acid?

Accepted Answer

A)   1.3 × 10-24
B)   1.3 × 10-10
C)   4.9 × 10-10
D)   2.0 × 109E) B) and D)
F) C) and D)

Question 6

In a particular titration experiment a 25.0 mL sample of an unknown diprotic acid required 30.0 mL of 0.200 M NaOH for the end point to be reached. What is the concentration of the acid?

Accepted Answer

A)   0.120 M
B)   0.167 M
C)   0.240 M
D)   0.333 ME) A) and B)
F) A) and C)

Question 7

Which of the following occurs when NaOH is dissolved in water to form a basic solution?

Accepted Answer

A)   A complex between NaOH and water is formed.
B)   NaOH breaks up to form Na+(aq) , H+(aq)  and O2-(aq) .
C)   NaOH breaks up to form Na+(aq)  and OH-(aq) .
D)   The water molecule loses an H+.E) B) and C)
F) All of the above

Question 8

An acetic acid solution has a pH of 5.80, what is the [H3O+] in this solution?

Accepted Answer

A)   1.6 × 10-20 M
B)   6.3 × 10-9 M
C)   1.6 × 10-6 M
D)   6.3 × 105 ME) A) and C)
F) All of the above

Question 9

Which of the following is the conjugate acid of ammonia, NH3?

Accepted Answer

A)   H+
B)   H3O+
C)   NH2-
D)   NH4+E) A) and B)
F) A) and C)

Question 10

An ammonia solution has a pH of 8.30, what is the [OH-] in this solution?

Accepted Answer

A)   5.0 × 10-23 M
B)   2.0 × 10- 6 M
C)   5.0 × 10-9 M
D)   2.0 × 108 ME) C) and D)
F) A) and D)

Question 11

Which of the following is the definition of pH?

Accepted Answer

A)   1 × 10pH
B)   log[H3O+]
C)   -log[H3O+]
D)   none of theseE) C) and D)
F) A) and D)

Question 12

When comparing the strength of two weak acids which factor(s)  do we use to determine which is the stronger of the two?

Accepted Answer

A)   the size of the acid dissociation constants
B)   the values of the pKa's of the acids
C)   either a or b
D)   neither a nor bE) B) and D)
F) B) and C)

Question 13

Metabolic acidosis is associated with increased production of which of the following?

Accepted Answer

A)   citric acid
B)   formic acid
C)   lactic acid
D)   phosphoric acidE) A) and D)
F) A) and B)

Question 14

Which of the following can be characterized as a strong acid?

Accepted Answer

A)   0.001 M HCl
B)   3.0 M CH3COOH
C)   both a and b
D)   neither a nor bE) None of the above
F) A) and D)

Question 15

Which of the following must we know when we carry out a titration?

Accepted Answer

A)   the concentrations of all reactants except one
B)   the stoichiometric ratio of the reactants
C)   the volumes all reactants
D)   all of the aboveE) All of the above
F) A) and D)

Question 16

In an aqueous solution thee [OH-] is 1.0 x 10- 6 M. What is the [H+]?

Accepted Answer

A)   1.0 × 10-9 M
B)   1.0 × 10-8 M
C)   1.0 × 10- 6 M
D)   1.0 × 108 ME) A) and B)
F) A) and C)

Question 17

Which of the following can be characterized as a strong acid?

Accepted Answer

A)   0.001 M HCl
B)   3.0 M HCl
C)   both a and b
D)   neither a nor bE) B) and C)
F) All of the above

Question 18

Which of the following solutions can function as a buffer?

Accepted Answer

A)   a solution containing HCl and NaCl
B)   a solution containing NaOH and NaCl
C)   a solution containing H2SO4 and NaHSO4
D)   none of the aboveE) B) and D)
F) B) and C)

Question 19

When an acid reacts with a base the reaction is called which of the following?

Accepted Answer

A)   neutralization
B)   precipitation
C)   redox
D)   single displacementE) C) and D)
F) B) and D)

Question 20

Which of the following is the Brønsted-Lowry definition of a base?

Accepted Answer

A)   a hydroxide ion acceptor
B)   a proton acceptor
C)   a proton donor
D)   none of theseE) A) and D)
F) None of the above

Exam 8: Acids and Bases

Which of the following is the Brønsted-Lowry definition of a base?

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In an aqueous solution thee [OH-] is 1.0 x 10- 6 M. What is the [H+]?

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Which of the following can be characterized as a strong acid?

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An ammonia solution has a pH of 8.30, what is the [OH-] in this solution?

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Which of the following is the conjugate acid of ammonia, NH3?

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Which of the following is the definition of pH?

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Which of the following must we know when we carry out a titration?

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In a particular titration experiment a 25.0 mL sample of an unknown diprotic acid required 30.0 mL of 0.200 M NaOH for the end point to be reached. What is the concentration of the acid?

Correct AnswerverifiedShow Answer

Which of the following is a cause of alkalosis?

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Metabolic acidosis is associated with increased production of which of the following?

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Which of the following can be characterized as a strong acid?

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The pKa of hydrocyanic acid is 9.31. What is the Ka of hydrocyanic acid?

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When comparing the strength of two weak acids which factor(s) do we use to determine which is the stronger of the two?

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The species H+ can be called which of the following?

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When an acid reacts with a base the reaction is called which of the following?

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Which of the following solutions can function as a buffer?

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When solid sodium hydroxide is dissolved in water which of the following species is not present in the solution?

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An acetic acid solution has a pH of 5.80, what is the [H3O+] in this solution?

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Acetic acid, CH3COOH, is a stronger acid than the ammonium ion, NH4+. When acetic acid reacts with ammonia, NH3, what species are present in the solution in the largest amount?

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Which of the following occurs when NaOH is dissolved in water to form a basic solution?

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In an aqueous solution thee [OH-] is 1.0 x 10^{- 6} M. What is the [H⁺]?

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An ammonia solution has a pH of 8.30, what is the [OH^-] in this solution?

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Which of the following is the conjugate acid of ammonia, NH₃?

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The pK_a of hydrocyanic acid is 9.31. What is the K_a of hydrocyanic acid?

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The species H⁺ can be called which of the following?

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An acetic acid solution has a pH of 5.80, what is the [H₃O⁺] in this solution?

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Acetic acid, CH₃COOH, is a stronger acid than the ammonium ion, NH₄⁺. When acetic acid reacts with ammonia, NH₃, what species are present in the solution in the largest amount?

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