Electrophilic Substitution

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Which electrophilic substitution reaction involves the use of concentrated sulfuric acid to introduce an SO₃H group into an aromatic ring?

1 point

Nitration

Sulfonation

Alkylation

Acylation

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During the Friedel-Crafts alkylation of benzene, which of the following is formed as the electrophile?

1 point

Alkyl cation (R+)

Acylium cation (RCO+)

Nitronium carion (NO₂+)

Halogen cation (X+)

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In the nitration of benzene, the electrophile is the nitronium ion (NO₂ +), which is generated by reacting benzene with concentrated nitric acid alone.

1 point

True

False

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Acylation reactions of aromatic compounds can be easily reversed, allowing the original aromatic compound to be regenerated.

1 point

True

False

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The presence of a nitro group (−NO₂) on an aromatic ring increases its reactivity towards electrophilic aromatic substitution.

1 point

True

False

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Which of the following reactions describes the halogenation of an aromatic compound?

1 point

The addition of a halogen across a double bond

The substitution of a hydrogen atom on the aromatic ring with a halogen atom

The removal of a halogen atom from the aromatic compound

The formation of a halogen bond within the aromatic ring

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During the halogenation of an aromatic ring, which of the following acts as a catalyst?

1 point

NaOH

H₂SO₄

AlCl₃

HNO₃

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Sulfonation of benzene to produce benzenesulfonic acid is an irreversible reaction.

1 point

True

False

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