Describe Chemical Reactions of Alkane

Chemical reactions of Alkane:

Substitution reaction: It is the substitution reaction of alkane with Chlorine (Cl₂), Bromine (Br₂) etc.

• Halogenation of alkane: It takes place in the presence of diffused sunlight, UV rays or in high temperature (300⁰ — 400⁰ C), yielding products are CH₂CI₂, CHC1₃, CCl₄
• The energy of C—H bond is 413 kjmol^-1.

Pyrolysis/Cracking/Thermal  Dissociation: It takes place in high temperature (500 – 800⁰ C) and in the absence of air.

• More volatile alkane can he prepared by cracking
• What type of product will be yielded at decomposition, it depends on nature, temperature and pressure of Alkane and the Catalyst.

Isomerism of Alkane

• It takes place in the presence of dry AlC1₃ and HCI gas mixture.
• Branched alkanes are good fuel.