Multiple Choice
Which graph best represents the energy profile of a reaction when an enzyme is present?
3. Acids and Bases
Reaction Mechanism
Back3. Acids and Bases
Reaction Mechanism
- Multiple ChoiceWhich of the following statements best describes the induced fit model of enzyme activity?
- Multiple ChoiceWhich is the correct depiction of the transition state for the SN2 reaction shown below?
- Multiple ChoiceWhat does it mean to be a nucleophile?
- Textbook Question
Each of these compounds can react as an electrophile. In each case, use curved arrows to show how the electrophile would react with the strong nucleophile sodium ethoxide, Na+ −OCH2CH3.
(c) CH3CH2Br
(d) BH3
- Textbook Question
In each reaction, label the reactants as Lewis acids (electrophiles) or Lewis bases (nucleophiles). Use curved arrows to show the movement of electron pairs in the reactions. Draw any nonbonding electrons to show how they participate in the reactions.
(b)
- Textbook Question
In each reaction, label the reactants as Lewis acids (electrophiles) or Lewis bases (nucleophiles). Use curved arrows to show the movement of electron pairs in the reactions. Draw any nonbonding electrons to show how they participate in the reactions.
(a)
- Textbook Question
Each of these compounds can react as a nucleophile. In each case, use curved arrows to show how the nucleophile would react with the strong electrophile BF3.
(a)
(b)
- Textbook Question
Each of these compounds can react as an electrophile. In each case, use curved arrows to show how the electrophile would react with the strong nucleophile sodium ethoxide, Na+ −OCH2CH3.
a.
b. NH4+
- Textbook Question
Label the reactants in these acid–base reactions as Lewis acids (electrophiles) or Lewis bases (nucleophiles). Use curved arrows to show the movement of electron pairs in the reactions.
(d)
- Textbook Question
Label the reactants in these acid–base reactions as Lewis acids (electrophiles) or Lewis bases (nucleophiles). Use curved arrows to show the movement of electron pairs in the reactions.
(b)
- Textbook Question
Label the reactants in these acid–base reactions as Lewis acids (electrophiles) or Lewis bases (nucleophiles). Use curved arrows to show the movement of electron pairs in the reactions.
(a)
- Textbook Question
Identify the arrow types that are shown in each of these arrow-pushing mechanisms.
(iv)
- Textbook Question
Show an arrow-pushing mechanism that forms the product on the right from the reactant at left. Only one arrow is necessary in each reaction. [Don't forget to draw in the lone pairs on this and the next two assessments.]
(a)
- Textbook Question
Suggest an arrow-pushing mechanism for each of the following acid–base reactions
(c)