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What is the electrophilic site in the following compounds? What is the electrophilic site in the following compounds? A) I = Carbon; II = carbon; III = boron. B) I = Chlorine; II = carbon; III = boron. C) I = Carbon; II = oxygen; III = boron. D) I = Carbon; II = carbon; III = fluorine.


A) I = Carbon; II = carbon; III = boron.
B) I = Chlorine; II = carbon; III = boron.
C) I = Carbon; II = oxygen; III = boron.
D) I = Carbon; II = carbon; III = fluorine.

E) A) and C)
F) None of the above

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Consider the following structures I-IV.Which two species represent constitutional isomers? Consider the following structures I-IV.Which two species represent constitutional isomers? A) I and II B) I and III C) I and IV D) II and IV


A) I and II
B) I and III
C) I and IV
D) II and IV

E) None of the above
F) A) and B)

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Which of the following compounds is the strongest acid? Which of the following compounds is the strongest acid? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) C) and D)
F) A) and B)

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What is the nucleophilic site in the following compounds? What is the nucleophilic site in the following compounds? A) I = Hydrogen; II = π electrons in bond; III = nitrogen. B) I = Oxygen; II = carbon; III = nitrogen. C) I = Hydrogen; II = carbon; III = carbon. D) I = Oxygen; II = π electrons in bond; III = nitrogen.


A) I = Hydrogen; II = π electrons in bond; III = nitrogen.
B) I = Oxygen; II = carbon; III = nitrogen.
C) I = Hydrogen; II = carbon; III = carbon.
D) I = Oxygen; II = π electrons in bond; III = nitrogen.

E) A) and B)
F) A) and C)

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Which of the following species can be both Lewis acid and Lewis base? Which of the following species can be both Lewis acid and Lewis base? A) I, III, IV B) I, II, IV C) II, III, IV D) I, II, III


A) I, III, IV
B) I, II, IV
C) II, III, IV
D) I, II, III

E) None of the above
F) All of the above

Correct Answer

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Consider the following structures I-IV.Which two species represent a conjugate acid-base pair? Consider the following structures I-IV.Which two species represent a conjugate acid-base pair? A) I and II B) I and III C) I and IV D) II and III


A) I and II
B) I and III
C) I and IV
D) II and III

E) All of the above
F) A) and D)

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Which of the following statements explains why H2O is a stronger acid than CH4?


A) H2O can form hydrogen bonds while CH4 cannot.
B) H2O forms a less stable conjugate base, HO-.
C) CH4 forms a more stable conjugate base, CH3-.
D) H2O forms a more stable conjugate base, HO-.

E) B) and C)
F) A) and C)

Correct Answer

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Which of the following compounds is the weakest acid?


A) HF
B) HCl
C) HBr
D) HI

E) C) and D)
F) B) and C)

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Which is the conjugate acid in the following reaction? Which is the conjugate acid in the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and B)
F) None of the above

Correct Answer

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Which of the following compounds has the lowest pKa?


A) H2O
B) H2S
C) NH3
D) CH4

E) All of the above
F) C) and D)

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Consider the following structures I-IV.Which two species represent resonance structures? Consider the following structures I-IV.Which two species represent resonance structures? A) I and II B) I and III C) I and IV D) II and IV


A) I and II
B) I and III
C) I and IV
D) II and IV

E) A) and B)
F) B) and D)

Correct Answer

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Which is the conjugate acid in the following reaction? Which is the conjugate acid in the following reaction? A) I B) II C) III D) IV


A) I
B) II
C) III
D) IV

E) A) and C)
F) A) and B)

Correct Answer

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