Question 1

Consider the following reaction coordinate diagram.  The transition state is represented by the letter B.

Accepted Answer

A) True 
 B)False

Question 2

Which atom in the following structure is preferentially protonated by a strong acid?

Accepted Answer

A)  i
B)  ii
C)  iii
D)  ivE) None of the above
F) A) and B)

Question 3

Which species is the conjugate acid in the following acid-base reaction?

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) A) and B)
F) B) and C)

Question 4

Which of the following energy diagrams represents the fastest reaction?

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) C) and D)
F) B) and D)

Question 5

Which of the following terms describes the role of ethanol in the acid-base reaction shown?

Accepted Answer

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

Question 6

Which of the following equations is correct?

Accepted Answer

A)  " Δ\DeltaΔ G ∘\circ∘  =  Δ\DeltaΔ H ∘\circ∘ - T Δ\DeltaΔ S ∘\circ∘ "
B)  " Δ\DeltaΔ H ∘\circ∘  =  Δ\DeltaΔ G ∘\circ∘ - T Δ\DeltaΔ S ∘\circ∘ "
C)  " Δ\DeltaΔ G ∘\circ∘  =  Δ\DeltaΔ H ∘\circ∘ -  Δ\DeltaΔ S ∘\circ∘ "
D)  " Δ\DeltaΔ G ∘\circ∘  =  Δ\DeltaΔ H ∘\circ∘ -  Δ\DeltaΔ S ∘\circ∘ /T" E) All of the above
F) A) and C)

Question 7

The energy needed by reactants to reach the transition state is the____________________,

Accepted Answer

free energ...

Question 8

Which of the following is the strongest acid?

Accepted Answer

A)  CH3NH2
B)  CH3PH2
C)  CH3OH
D)  CH3SHE) All of the above
F) A) and C)

Question 9

____________________ is defined by the following equation.
$\Delta$G$\circ$ = -RT ln Keq

Accepted Answer

Gibbs free...

Question 10

Which of the following has the highest bond dissociation energy?

Accepted Answer

A)  HF
B)  HCl
C)  HBr
D)  HIE) B) and C)
F) C) and D)

Question 11

Which of the following terms describes the role of ethene in the acid-base reaction shown?

Accepted Answer

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

Question 12

Which set of curved arrows accounts for the deprotonation of an acid (A-H)  by a base (:B) ?

Accepted Answer

A)  1
B)  2
C)  3
D)  4E) B) and D)
F) A) and B)

Question 13

The pKa of HCl is -7. What is the value of the equilibrium constant, Keq, for the following equilibrium? [The concentration of water in a dilute aqueous solution is 55 M] a of HCl is -7. What is the value of the equilibrium constant, Keq, for the following equilibrium? [The concentration of water in a dilute aqueous solution is 55 M]   A)  1.8 * 105  B)  385  C)  1.8 * 10-5  D)  -1.8* 105 " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  "1.8 * 105"
B)  "385"
C)  "1.8 * 10-5"
D)  "-1.8* 105"E) B) and C)
F) B) and D)

Question 14

Indole is pleasant smelling in highly dilute solutions and has been used in perfumery.  When indole is placed in the presence of a strong base the nitrogen atom will be deprotonated.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following terms describes the reactivity of boron tribromide, BBr3?

Accepted Answer

A)  Brønsted-Lowry acid and Lewis acid
B)  Brønsted-Lowry base and Lewis base
C)  Lewis acid and not a Brønsted-Lowry acid
D)  Lewis base and not a Brønsted-Lowry baseE) B) and C)
F) C) and D)

Question 16

Use curved arrows to show the movement of pairs of electrons in the following reaction between a Lewis acid and a Lewis base, and show the structure of the product.

Accepted Answer

The answer of Use curved arrows to show the movement...

Question 17

The following is generic depiction of a reaction using the curve arrow formalism.  In this reaction electrons move from C to B and A will have a positive charge in the product.

Accepted Answer

A) True 
 B)False

Question 18

What is the value of the equilibrium constant for the following equilibrium?

Accepted Answer

log₁₀K_eq = pK_a(acid) - pK...

Question 19

Provide the equation for the acid dissociate constant, Ka,for the following equilibrium.

Accepted Answer

Question 20

What is the value of the equilibrium constant, Keq, for the following reaction? eq, for the following reaction?   A)  109  B)  10-9  C)  9  D)  1/9 " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  "109"
B)  "10-9"
C)  "9"
D)  "1/9"E) None of the above
F) A) and C)

Exam 4: Acids and Bases

What is the value of the equilibrium constant, Keq, for the following reaction?

Correct AnswerverifiedShow Answer

Indole is pleasant smelling in highly dilute solutions and has been used in perfumery. When indole is placed in the presence of a strong base the nitrogen atom will be deprotonated.

Correct AnswerverifiedShow Answer

Which set of curved arrows accounts for the deprotonation of an acid (A-H) by a base (:B) ?

Correct AnswerverifiedShow Answer

Which of the following equations is correct?

Correct AnswerverifiedShow Answer

Which of the following energy diagrams represents the fastest reaction?

Correct AnswerverifiedShow Answer

What is the value of the equilibrium constant for the following equilibrium?

Correct Answerverifiedlog10Keq = pKa(acid) - pK...View AnswerShow Answer

Provide the equation for the acid dissociate constant, Ka,for the following equilibrium.

Correct AnswerverifiedShow Answer

Consider the following reaction coordinate diagram. The transition state is represented by the letter B.

Correct AnswerverifiedShow Answer

The pKa of HCl is -7. What is the value of the equilibrium constant, Keq, for the following equilibrium? [The concentration of water in a dilute aqueous solution is 55 M]

Correct AnswerverifiedShow Answer

The following is generic depiction of a reaction using the curve arrow formalism. In this reaction electrons move from C to B and A will have a positive charge in the product.

Correct AnswerverifiedShow Answer

____________________ is defined by the following equation. Δ\DeltaΔ G ∘\circ∘ = -RT ln Keq

Correct AnswerverifiedGibbs free...View AnswerShow Answer

Which of the following is the strongest acid?

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Which atom in the following structure is preferentially protonated by a strong acid?

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Which of the following terms describes the role of ethanol in the acid-base reaction shown?

Correct AnswerverifiedShow Answer

Which of the following terms describes the reactivity of boron tribromide, BBr3?

Correct AnswerverifiedShow Answer

Use curved arrows to show the movement of pairs of electrons in the following reaction between a Lewis acid and a Lewis base, and show the structure of the product.

Correct AnswerverifiedShow Answer

The energy needed by reactants to reach the transition state is the____________________,

Correct Answerverifiedfree energ...View AnswerShow Answer

Which of the following terms describes the role of ethene in the acid-base reaction shown?

Correct AnswerverifiedShow Answer

Which species is the conjugate acid in the following acid-base reaction?

Correct AnswerverifiedShow Answer

Which of the following has the highest bond dissociation energy?

Correct AnswerverifiedShow Answer

What is the value of the equilibrium constant, K_eq, for the following reaction?

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log₁₀K_eq = pK_a(acid) - pK...
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Provide the equation for the acid dissociate constant, K_a,for the following equilibrium.

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The pK_a of HCl is -7. What is the value of the equilibrium constant, K_eq, for the following equilibrium? [The concentration of water in a dilute aqueous solution is 55 M]

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____________________ is defined by the following equation. $\Delta$ G^$\circ$ = -RT ln K_eq

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Gibbs free...
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Which of the following terms describes the reactivity of boron tribromide, BBr₃?

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free energ...
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