Explain the Characteristics of Arenes and the Reactions They Undergo

Question

Examlex · Accepted Answer

The Answer is Most arenes that contain a single six-membered ring are volatile liquids, such as benzene and the xylenes, although some arenes with substituents on the ring are solids at room temperature. Although arenes are usually drawn with three C=C bonds, benzene is about 150 kJ/mol more stable than would be expected if it contained three double bonds. This increased stability is due to the delocalization of the π electron density over all the atoms of the ring. Compared with alkenes, arenes are poor nucleophiles. They do not undergo addition reactions like alkenes instead, they undergo a variety of electrophilic aromatic substitution reactions that involve the replacement of -H on the arene by a group -E, such as -NO₂, -SO₃H, a halogen, or an alkyl group, in a two-step process. The first step involves addition of the electrophile to the π system of benzene, forming a carbocation. In the second step, a proton is lost from the adjacent carbon on the ring.

Explain the Characteristics of Arenes and the Reactions They Undergo

Essay

Correct Answer:
Verified

Explain the Characteristics of Arenes and the Reactions They Undergo

Essay

Correct Answer:VerifiedShow Answer

Correct Answer:
Verified