Intro to Electrophilic Aromatic Substitution: Crash Course Organic Chemistry #37

What is the monomer unit used to synthesize polystyrene?

• Benzene

• Toluene

• Styrene

• Cumene

The conversion of ethylbenzene to styrene is achieved through which type of oxidation reaction?

• Hydrogenation

• Halogenation

• Dehydrogenation

• Nitration

Why does benzene not readily undergo electrophilic addition reactions like typical alkenes?

• Its electrons are localized within specific double bonds.

• It is highly nucleophilic and repels electrophiles.

• Its electrons are delocalized, making it less nucleophilic than alkenes.

• It requires a strong base to initiate any reaction.

What is the primary role of a Lewis acid catalyst, such as FeBr3, in the bromination of benzene?

• To stabilize the benzene ring.

• To make the benzene ring more nucleophilic.

• To make bromine a better electrophile.

• To remove hydrogen atoms from the benzene ring.

What is the electrophile in the nitration of benzene?

• HSO4-

• NO2+

• HNO3

• H2SO4

Which two compounds are combined to form fuming sulfuric acid, which is used in the sulfonation of benzene?

• Sulfuric acid and nitric acid

• Sulfur trioxide and nitric acid

• Sulfuric acid and sulfur trioxide

• Benzene and sulfuric acid

In Friedel-Crafts alkylation, if 1-chloro-2-methylpropane reacts with benzene in the presence of AlCl3, what is the major product formed due to carbocation rearrangement?

• 2-methylpropylbenzene

• tert-butylbenzene

• Isopropylbenzene

• Nitrobenzene

What is the resonance-stabilized electrophile formed during Friedel-Crafts acylation?

• Alkyl carbocation

• Nitronium ion

• Acylium ion

• Sulfonium ion