Question 1

Which of the following is the strongest base?

Accepted Answer

A)  CH3COCH3
B)  CH3COOH
C)  NH3
D)  H2OE) A) and C)
F) B) and C)

Question 2

What is the correct classification of the following compound? CH3-O-CH3

Accepted Answer

A)  Brønsted-Lowry acid and Lewis acid
B)  Brønsted-Lowry base and Lewis base
C)  Brønsted-Lowry base
D)  Lewis baseE) A) and B)
F) None of the above

Question 3

Which of the following statements about a Brønsted-Lowry base is true?

Accepted Answer

A)  The net charge may be zero, positive, or negative.
B)  All Brønsted-Lowry bases contain a lone pair of electrons or a π bond.
C)  All Brønsted-Lowry bases contain a proton.
D)  The net charge may be zero or positive.E) A) and D)
F) B) and C)

Question 4

Identify the Lewis acid in the following reaction.

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) B) and C)

Question 5

Rank the following compounds in order of increasing acidity, putting the least acidic first.

Accepted Answer

A)  III 
B)  III 
C)  II 
D)  III < I < II < IVE) A) and B)
F) C) and D)

Question 6

Which of the following species is the conjugate base of the hydronium ion, H3O+?

Accepted Answer

A)  H3O
B)  H2O-
C)  H2O
D)  HO-E) B) and D)
F) C) and D)

Question 7

Which of the following statements about Lewis acids is true?

Accepted Answer

A)  Lewis acids are proton donors.
B)  Lewis acids are proton acceptors.
C)  Lewis acids are electron pair donors.
D)  Lewis acids are electron pair acceptors.E) None of the above
F) C) and D)

Question 8

Rank the following compounds in order of decreasing acidity, putting the most acidic first.  II > III > I B) IV > III > II > I C) III > IV > II > I D) III > IV > I > II" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  IV > II > III > I
B)  IV > III > II > I
C)  III > IV > II > I
D)  III > IV > I > IIE) All of the above
F) None of the above

Question 9

Which of the following compounds is the weakest acid?

Accepted Answer

A)  H2S
B)  PH3
C)  HCl
D)  SiH4E) B) and C)
F) All of the above

Question 10

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

Accepted Answer

A)  H4N
B)  H3N+
C)  H2N-
D)  H4N+E) None of the above
F) All of the above

Question 11

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

Accepted Answer

A)  CH3OH
B)  H2O
C)  CH3COOH
D)  BF3E) B) and D)
F) B) and C)

Question 12

Which of the following statements about acid strength is true?

Accepted Answer

A)  The stronger the acid, the further the equilibrium lies to the left.
B)  The stronger the acid, the smaller the Ka.
C)  The stronger the acid, the larger the pKa.
D)  The stronger the acid, the smaller the pKa.E) None of the above
F) B) and C)

Question 13

Which of the following species is the conjugate base of methanol, CH3OH?

Accepted Answer

A)  CH3OH2+
B)  CH3O-
C)  CH3-
D)  CH4E) A) and B)
F) A) and C)

Question 14

Rank the following compounds in order of decreasing acidity, putting the most acidic first.  II > III B) III > II > I C) II > III > I D) III > I > II" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  I > II > III
B)  III > II > I
C)  II > III > I
D)  III > I > IIE) B) and C)
F) A) and D)

Question 15

Which of the following statements explain why HBr is a stronger acid than HF?

Accepted Answer

A)  Br- is more stable than F- because Br- is larger than F-.
B)  Br- is less stable than F- because Br- is larger than F-.
C)  Br- is more stable than F- because Br- is less electronegative than F-.
D)  Br- is less stable than F- because Br- is less electronegative than F-.E) None of the above
F) A) and D)

Question 16

Which of the following statements is a correct definition for a Brønsted-Lowry acid?

Accepted Answer

A)  Proton acceptor
B)  Electron pair donor
C)  Electron pair acceptor
D)  Proton donorE) B) and C)
F) A) and D)

Question 17

Which of the following concepts can be used to explain the difference in acidity between acetylene (C2H2)  and ethylene (C2H4) ?

Accepted Answer

A)  Size
B)  Resonance
C)  Inductive effect
D)  HybridizationE) All of the above
F) C) and D)

Question 18

Identify the Lewis base in the following reaction.

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) A) and C)

Question 19

Rank the following conjugate bases in order of decreasing basicity, putting the most basic first.  I > III B) I > II > III C) III > I > II D) III > II > I" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  II > I > III
B)  I > II > III
C)  III > I > II
D)  III > II > IE) A) and D)
F) B) and C)

Question 20

Which is the conjugate base in the following reaction?

Accepted Answer

A)  I
B)  II
C)  III
D)  IVE) A) and B)
F) A) and C)

Exam 2: Acids and Bases

What is the correct classification of the following compound? CH3-O-CH3

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Rank the following compounds in order of decreasing acidity, putting the most acidic first.

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Which of the following statements explain why HBr is a stronger acid than HF?

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Which of the following statements about acid strength is true?

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Rank the following compounds in order of increasing acidity, putting the least acidic first.

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Which of the following is the strongest base?

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Which of the following compounds is the weakest acid?

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Rank the following conjugate bases in order of decreasing basicity, putting the most basic first.

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Which is the conjugate base in the following reaction?

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Rank the following compounds in order of decreasing acidity, putting the most acidic first.

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Which of the following statements is a correct definition for a Brønsted-Lowry acid?

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

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Which of the following statements about Lewis acids is true?

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Which of the following statements about a Brønsted-Lowry base is true?

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Which of the following species is the conjugate base of the hydronium ion, H3O+?

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Which of the following species is the conjugate base of methanol, CH3OH?

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

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Which of the following concepts can be used to explain the difference in acidity between acetylene (C2H2) and ethylene (C2H4) ?

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Identify the Lewis base in the following reaction.

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Identify the Lewis acid in the following reaction.

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What is the correct classification of the following compound? CH₃-O-CH₃

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Which of the following species is the conjugate base of the hydronium ion, H₃O⁺?

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Which of the following species is the conjugate base of methanol, CH₃OH?

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

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Which of the following concepts can be used to explain the difference in acidity between acetylene (C₂H₂) and ethylene (C₂H₄) ?

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