Question 1

Iodine trichloride, ICl3, will react with a chloride ion to form ICl4-. Which species, if any, acts as a Lewis acid this reaction?

Accepted Answer

A)   ICl4-
B)   ICl 3
C)   Cl-
D)   the solvent
E)   None of the species acts as a Lewis acid in this reaction.F) B) and E)
G) A) and B)

Question 2

Define a base according to the Brønsted-Lowry theory. Write a balanced equation in support of this definition, in which the base is acting as a Brønsted-Lowry base but not as an Arrhenius base.

Accepted Answer

According to Brønsted and Lowr...

Question 3

It is not possible to have a pH lying outside the range 0 to 14.

Accepted Answer

A) True 
 B)False

Question 4

What is the pH of a 0.010 M triethanolammonium chloride, (HOC2H2) 3NHCl, solution? 
Kb, ((HOC2H2) 3N)  = 5.9 × 10-7

Accepted Answer

A)   2.75
B)   4.89
C)   9.11
D)   11.25
E)   none of the aboveF) All of the above
G) B) and D)

Question 5

All strong acids have weak conjugate bases.

Accepted Answer

A) True 
 B)False

Question 6

What is the pOH of a 0.0250 M HI solution?

Accepted Answer

A)   0.944
B)   1.602
C)   12.398
D)   13.056
E)   none of the aboveF) A) and D)
G) D) and E)

Question 7

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

Accepted Answer

A) True 
 B)False

Question 8

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) C) and D)

Question 9

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 Ka and Kb for the species in solution must be known before a prediction can be made.F) A) and D)
G) C) and E)

Question 10

What is the pH of a 0.00200 M HClO4 solution?

Accepted Answer

A)   0.995
B)   1.378
C)   2.699
D)   6.215
E)   none of the aboveF) B) and D)
G) B) and E)

Question 11

Which of the following is the strongest acid?

Accepted Answer

A)   CH3COOH
B)   HF
C)   H3PO4
D)   H2SO3
E)   HIF) A) and D)
G) B) and C)

Question 12

Which of the following is the strongest base?

Accepted Answer

A)   CH3NH2
B)   NaNO3
C)   B(OH) 3
D)   Al(OH) 3
E)   LiOHF) B) and E)
G) A) and B)

Question 13

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 14

Arrhenius bases raise the hydroxide ion concentration when dissolved in water.

Accepted Answer

A) True 
 B)False

Question 15

The substance HOBr is considered

Accepted Answer

A)   a weak Arrhenius acid.
B)   a weak Arrhenius base.
C)   a strong Arrhenius acid.
D)   a strong Arrhenius base.
E)   a neutral compound.F) All of the above
G) C) and D)

Question 16

A solution is prepared by adding 0.10 mol of potassium chloride, KCl, 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)   One needs to know the temperature before any of the above predictions can be made.
E)   The values for Ka and Kb for the species in solution must be known before a prediction can be made.F) B) and D)
G) B) and C)

Question 17

Which one of the following is a Lewis acid but not a Brønsted-Lowry acid?

Accepted Answer

A)   Fe3+
B)   H3O+
C)   HSO4-
D)   NH3
E)   H2OF) C) and D)
G) B) and E)

Question 18

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

Accepted Answer

A)   0.1 M CH3COOH, pKa = 4.7
B)   0.1 M CuCl2, pKa = 7.5
C)   0.1 M H3C6H5O7, pKa = 3.1
D)   0.1 M ZnCl2, pKa = 9.0
E)   pure waterF) A) and C)
G) A) and D)

Question 19

Which of the following is the strongest acid?

Accepted Answer

A)   CH3COOH
B)   HF
C)   H3PO4
D)   H2SO3
E)   H2SO4F) A) and E)
G) C) and E)

Question 20

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) C) and D)
G) A) and B)

Exam 18: Acid-Base Equilibria

The substance HOBr is considered

Correct AnswerverifiedShow Answer

Which of the following is the strongest acid?

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

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Which of the following is the strongest base?

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What is the pH of a 0.010 M triethanolammonium chloride, (HOC2H2) 3NHCl, solution? Kb, ((HOC2H2) 3N) = 5.9 × 10-7

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What is the pH of a 0.00200 M HClO4 solution?

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Define a base according to the Brønsted-Lowry theory. Write a balanced equation in support of this definition, in which the base is acting as a Brønsted-Lowry base but not as an Arrhenius base.

Correct AnswerverifiedAccording to Brønsted and Lowr...View AnswerShow 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?

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All strong acids have weak conjugate bases.

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Which of the following is the strongest acid?

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Which one of the following is a Lewis acid but not a Brønsted-Lowry acid?

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It is not possible to have a pH lying outside the range 0 to 14.

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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?

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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?

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What is the pOH of a 0.0250 M HI solution?

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

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Arrhenius bases raise the hydroxide ion concentration when dissolved in water.

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Iodine trichloride, ICl3, will react with a chloride ion to form ICl4-. Which species, if any, acts as a Lewis acid this reaction?

Correct AnswerverifiedShow Answer

A solution is prepared by adding 0.10 mol of potassium chloride, KCl, to 1.00 L of water. Which statement about the solution is correct?

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

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What is the pH of a 0.010 M triethanolammonium chloride, (HOC₂H₂) ₃NHCl, solution? K_b, ((HOC₂H₂) ₃N) = 5.9 × 10^-7

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What is the pH of a 0.00200 M HClO₄solution?

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According to Brønsted and Lowr...
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A 0.050 M solution of the weak acid HA has [H₃O⁺] = 3.77 × 10^-4 M. What is the K_afor the acid?

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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?

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Iodine trichloride, ICl₃, will react with a chloride ion to form ICl₄^-. Which species, if any, acts as a Lewis acid this reaction?

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