Discuss and show examples of halogenation substitutions on organic hydrocarbons which lead to the synthesis of hydrocarbon halide compounds. Use a general formula and specific formulas to indicate the substitution replacements. Discuss substitutions onto a Benzene molecule to produce some common volatile substances such as toluene and xylene. Draw the structure for the trinitro compound of methyl benzene which becomes the common named compound trinitro toluene or TNT.