Answer:
The source of energy used to react with chlorine and methane is ultraviolet rays or in the presence of sunlight.
Explanation:
The source of energy used to react with chlorine and methane is ultraviolet rays or in the presence of sunlight.This reaction is an example of Photo-chemical reaction.
Photo-chemical reaction is the type of chemical reaction in which energy is imparted to the reactants by the light or reactions initiated by light.
The photo chemical reaction of methane with chlorine in presence of ultraviolet light is given as:
[tex]CH_4+Cl_2\overset{h\nu}\rightarrow CH_3Cl+HCl[/tex]
[tex]CH_3Cl+Cl_2\overset{h\nu}\rightarrow CH_2Cl_2+HCl[/tex]
[tex]CH_2Cl_2+Cl_2\overset{h\nu}\rightarrow CH_1Cl_3+HCl[/tex]
[tex]CH_1Cl_3+Cl_2\overset{h\nu}\rightarrow CCl_4+HCl[/tex]
