Question 1

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) D) and E)
G) A) and E)

Question 2

The substance H2SO3 is considered

Accepted Answer

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

Question 3

All strong acids have weak conjugate bases.

Accepted Answer

A) True 
 B)False

Question 4

The substance NaNO3 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) None of the above
G) B) and C)

Question 5

The substance NH3 is considered

Accepted Answer

A)   a weak acid.
B)   a weak base.
C)   a strong acid.
D)   a strong base.
E)   a neutral compound.F) A) and D)
G) B) and E)

Question 6

Which of the following is the strongest acid?

Accepted Answer

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

Question 7

Formic acid, which is a component of insect venom, has a Ka = 1.8 * 10¯4. What is the [H3O+] in a solution that is initially 0.10 M formic acid, HCOOH?

Accepted Answer

A)   4.2 * 10¯3 M
B)   8.4 * 10¯3 M
C)   1.8 * 10¯4 M
D)   1.8 * 10¯5 M
E)   1.8 * 10¯6 MF) A) and B)
G) C) and D)

Question 8

An aqueous solution is considered to be acidic if

Accepted Answer

A)   the hydroxide ion concentration is 10¯6 M.
B)   the hydrogen ion concentration is 10¯8 M.
C)   the hydroxide and hydrogen ion concentrations are equal.
D)   the hydroxide ion concentration is greater than the hydrogen ion concentration.
E)   the hydroxide ion concentration is 10¯10 M.F) B) and E)
G) B) and D)

Question 9

Which one of the following pairs is not a conjugate acid-base pair?

Accepted Answer

A)   H2O, OH¯
B)   H2O2, HO2¯
C)   OH¯, O2¯
D)   H2PO4¯, HPO42¯
E)   HCl, H+F) B) and E)
G) B) and C)

Question 10

What is the [H3O+] for a solution at 25  °\degree° C that has pOH = 5.640?

Accepted Answer

A)   2.34 *10¯4 M
B)   2.29 * 10¯6 M
C)   4.37 * 10¯9 M
D)   4.27 * 10¯11 M
E)   8.360 M F) D) and E)
G) All of the above

Question 11

Which of the following is a Lewis base?

Accepted Answer

A)   BCl3
B)   Cu2+
C)   Cl¯
D)   Mn2+
E)   NH4+F) B) and C)
G) All of the above

Question 12

Which, if any, of the following acids is strong?

Accepted Answer

A)   phosphoric
B)   carbonic
C)   acetic
D)   water
E)   None of these choices is correct.F) All of the above
G) B) and D)

Question 13

What is the pH of a 0.75 M HNO3 solution?

Accepted Answer

A)   0.12
B)   0.29
C)   0.63
D)   0.82
E)   > 1.0F) D) and E)
G) A) and D)

Question 14

All weak acids have strong conjugate bases.

Accepted Answer

A) True 
 B)False

Question 15

Select the strongest acid from the following list.

Accepted Answer

A)   HBrO
B)   HBrO2
C)   HClO2
D)   HClO3
E)   HIOF) B) and E)
G) A) and B)

Question 16

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 these choices is correct.F) A) and C)
G) A) and B)

Question 17

Which one of the following will give a solution with a pH > 7, but is not an Arrhenius base in the strict sense?

Accepted Answer

A)   CH3NH2
B)   NaOH
C)   CO2
D)   Ca(OH) 2
E)   CH4F) A) and E)
G) A) and D)

Question 18

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

Accepted Answer

A)   ICl4¯
B)   ICl3
C)   Cl¯
D)   the solvent
E)   None of the species acts as a Lewis acid in this reaction.F) C) and D)
G) A) and B)

Question 19

Consider the reaction: BF3 + F¯ $\rightarrow$ BF4¯
Can this ever be considered to be an acid-base reaction? Support your answer with appropriate arguments.

Accepted Answer

Yes, according to Lewis, this ...

Question 20

(p. 812 and other sections)  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) D) and E)
G) A) and D)

Exam 18: Acid-Base Equilibria

Which, if any, of the following acids is strong?

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All strong acids have weak conjugate bases.

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All weak acids have strong conjugate bases.

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Select the strongest acid from the following list.

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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 in this reaction?

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What is the pH of a 0.75 M HNO3 solution?

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What is the pH of a 0.050 M LiOH solution?

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Which of the following is the strongest acid?

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Consider the reaction: BF3 + F¯ →\rightarrow→ BF4¯ Can this ever be considered to be an acid-base reaction? Support your answer with appropriate arguments.

Correct AnswerverifiedYes, according to Lewis, this ...View AnswerShow Answer

Which one of the following pairs is not a conjugate acid-base pair?

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What is the pOH of a 0.0250 M HI solution?

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(p. 812 and other sections) Which of the following aqueous liquids will have the highest pH?

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Which of the following is a Lewis base?

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The substance H2SO3 is considered

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The substance NH3 is considered

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An aqueous solution is considered to be acidic if

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What is the [H3O+] for a solution at 25 °\degree° C that has pOH = 5.640?

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Which one of the following will give a solution with a pH > 7, but is not an Arrhenius base in the strict sense?

Correct AnswerverifiedShow Answer

Formic acid, which is a component of insect venom, has a Ka = 1.8 * 10¯4. What is the [H3O+] in a solution that is initially 0.10 M formic acid, HCOOH?

Correct AnswerverifiedShow Answer

The substance NaNO3 is considered

Correct AnswerverifiedShow Answer

Correct Answer
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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 in this reaction?

Correct Answer
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What is the pH of a 0.75 M HNO₃ solution?

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Consider the reaction: BF₃ + F¯ $\rightarrow$ BF₄¯ Can this ever be considered to be an acid-base reaction? Support your answer with appropriate arguments.

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Yes, according to Lewis, this ...
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The substance H₂SO₃ is considered

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The substance NH₃ is considered

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What is the [H₃O⁺] for a solution at 25 $\degree$ C that has pOH = 5.640?

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Correct Answer
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Formic acid, which is a component of insect venom, has a K_a = 1.8 * 10¯⁴. What is the [H₃O⁺] in a solution that is initially 0.10 M formic acid, HCOOH?

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The substance NaNO₃ is considered

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