Benzene & Aromatic Hydrocarbons

Arenes do not show...

• Delocalization of

  pi-electrons

• Greater stability

• Resonance

• Electrophilic

  additions

The product formed in the reaction of toluene with a molecule of chlorine in the presence of FeCl₃ is

• Benzene chloride

• o- and p-chlorotoluene

• Toluene

•     Methylchloride

Find the reactants in Friedel-Craft’s alkylation

• C₆H₆ + CH₃Cl

• C₆H₆ + NH₃

• C₆H₆ + CH₃CO

• C₆H₆ + CH₃COCl

Which of the following is NOT a use of aromatic hydrocarbons?

• They are used to make plastics.

• They can be used to make Acetaminophen.

• They can be made into dyes.

• As a primary storage site for lipids.

What feature of aromatic hydrocarbons make them especially stable?

• They are cyclic and unsaturated.                        

• Their electrons are delocalized.

• They are straight chained and saturated

• They are made of hydrogens, carbons and sometimes oxygen.

Choose the true statements about benzene and aromatic hydrocarbon.

• Are compounds with a pleasant odor.

• Are compounds that can be obtained by heating petroleum

• Their chemical reactions happen by

  addition reactions

• Are compounds that have low H to C ratios, compared to other hydrocarbons.

In benzene sulphonic acid, the sulphonic group is attached with the benzene ring through which element?

• Oxygen                      

• Hydrogen  

• Sulphur

The boiling and melting points are _______________ than those corresponding to aliphatic hydrocarbons.

Are compounds that are _______________ in water.

• higher, insoluble
• lower, insoluble

• higher, soluble

• lower, soluble

Benzene can form _______________ ring structures, forming _________________ aromatic HCs.

When they burn, aromatic hydrocarbons give off a _____________ sooty flame.

• red

• orange

• yellow

• green