What is a substitution reaction? Give the reaction of chlorine with ethane and name the product formed.
A substitution reaction is a reaction in which an atom or a group of atom substitutes another atom in an organic compound. For example, chlorination of alkanes occurs by substitution of H-atom in alkane by Cl-atom.
R−CH3Cl2/hv−−−−→R−CH2Cl where R is an alkyl group.
When ethane is reacted with chlorine in presence of sunlight or ultraviolet light, ethyl chloride is obtained.
CH3−CH3+Cl2hv−→CH3−CH2Cl+HCl