IUPAC Nomenclature of Organic Compounds Quiz

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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?

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?

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?

Deactivating the ring Signup and view all the answers

How do electrophilic substitution reactions in haloarenes compare to those in benzene?

Occur at higher temperatures Signup and view all the answers

Why does the presence of a nitro group at meta-position not stabilize the negative charge?

Lack of resonance structures with negative charge on carbon bearing NO2 group Signup and view all the answers

Which position do further substitutions occur at with respect to a halogen atom due to o, p-directing influence?

Ortho- and para-positions Signup and view all the answers

What effect does the halogen atom have on the electron density in the benzene ring?

-I effect, withdrawing electron density Signup and view all the answers

Why do electrophilic substitution reactions in haloarenes require more drastic conditions than those in benzene?

-I effect and -M effect of halogen atom deactivate ring Signup and view all the answers

Which group promotes ortho- and para-substitution in electrophilic aromatic substitution reactions?

–Cl group Signup and view all the answers

IUPAC Nomenclature of Organic Compounds Quiz

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Questions and Answers

How does the –NO2 group stabilize the negative charge in ortho- and para-positions with respect to the halogen substituent?

What effect does a nitro group at meta-position have on the reactivity in electrophilic substitution reactions?

Why does halobenzene show an o, p-directing influence in electrophilic substitution reactions?

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?

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?

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?

Which group promotes ortho- and para-substitution in electrophilic aromatic substitution reactions?

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