Explain substitution reaction in hydrocarbons with an example.

Explanation

The reaction in which one or more hydrogen atoms of a hydrocarbon are replaced by some other atom is called substitution reaction Substitution reaction are the characteristic property of a saturated hydrocarbon (alkanes).
Example: Methane reacts with chlorine in the presence of sunlight to form chloromethane and HCI.
`CH_4 + CI_2 overset("Sunlight")(rarr) CH_3 CI + HCI`