This is a series of chemical reactions involving methane (CH4) and chlorine (Cl).

Methane (CH4) undergoes a substitution reaction with chlorine (Cl) to form methyl chloride (CH3Cl).Methyl chloride (CH3Cl) then undergoes a series of reactions to form methanol (CH3OH).Methanol (CH3OH) is further reacted to form formaldehyde (HC).Formaldehyde (HC) can react with chlorine (Cl) to form chloroform (CHCl3).

This series of reactions demonstrates different pathways for the transformation of methane and chlorine into various chemical compounds.