Science Quiz / Benzene Chemistry True-False

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QUIZ: Can you state whether each of these statements about benzene reactions is TRUE or FALSE?

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StatementTrue/False

Reaction of butylbenzene with acidic KMnO4 yields benzoic acid.
The iron and HCl will convert a nitro group into an amino group on benzene.
In electrophilic aromatic subsitution reactions, a strong acid is needed to generate the electrophile.
Formation of the sigma complex (arenium ion) is the rate determining step of electrophilic aromatic substitution.
Acylbenzenes may be converted to alkylbenzenes using hydrazine under basic conditions.
Reaction of toluene with CO, HCl, AlCl3, CuCl yields a mixture of ortho and para methylbenzaldehyde.

A mixture of HBr and Br2 will convert benzene into bromobenzene.
The mechanism for electrophilic aromatic substitution is one concerted step.
Reaction of benzene with 1-chlorobutane/AlCl3 yields 2-phenylbutane.

Addition reactions are not commonly seen with aromatic compounds.
Upon reaction with acidic potassium permanganate, t-butylbenzene becomes benzoic acid.
Reaction of bromobenzene with chlorine/AlCl3 yields meta-bromochlorobenzene.
A mixture of nitric and sulfuric acid can be used to put a sulfonic acid group on a benzene ring.
Friedel-Crafts acylation can be used to avoid both polyalkylation and rearrangement.

The nitro group is a meta director.
In the mechanism for electrophilic aromatic substitution, benzene acts as a weak electrophile.

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