Podcast
Questions and Answers
How does the –NO2 group stabilize the negative charge in ortho- and para-positions with respect to the halogen substituent?
How does the –NO2 group stabilize the negative charge in ortho- and para-positions with respect to the halogen substituent?
- By withdrawing electron density through resonance (correct)
- By exerting an inductive effect
- By increasing electrophilicity
- By donating electrons through resonance
What effect does a nitro group at meta-position have on the reactivity in electrophilic substitution reactions?
What effect does a nitro group at meta-position have on the reactivity in electrophilic substitution reactions?
- Promotes ortho- and para-substitution
- No effect on reactivity
- Increases reactivity
- Decreases reactivity (correct)
Why does halobenzene show an o, p-directing influence in electrophilic substitution reactions?
Why does halobenzene show an o, p-directing influence in electrophilic substitution reactions?
- Resonance structures with increased electron density at ortho- and para-positions (correct)
- Due to hyperconjugation effects
- Because of donating electrons through resonance
- Withdrawal of electron density by inductive effect
What role does the halogen atom play in the electrophilic substitution reactions of haloarenes?
What role does the halogen atom play in the electrophilic substitution reactions of haloarenes?
How do electrophilic substitution reactions in haloarenes compare to those in benzene?
How do electrophilic substitution reactions in haloarenes compare to those in benzene?
Why does the presence of a nitro group at meta-position not stabilize the negative charge?
Why does the presence of a nitro group at meta-position not stabilize the negative charge?
Which position do further substitutions occur at with respect to a halogen atom due to o, p-directing influence?
Which position do further substitutions occur at with respect to a halogen atom due to o, p-directing influence?
What effect does the halogen atom have on the electron density in the benzene ring?
What effect does the halogen atom have on the electron density in the benzene ring?
Why do electrophilic substitution reactions in haloarenes require more drastic conditions than those in benzene?
Why do electrophilic substitution reactions in haloarenes require more drastic conditions than those in benzene?
Which group promotes ortho- and para-substitution in electrophilic aromatic substitution reactions?
Which group promotes ortho- and para-substitution in electrophilic aromatic substitution reactions?
