Assignment:
Methylene chloride can be prepared from the reaction of methane and chlorine, by the following equation:
CH4(g) + Cl2(g) ---> CH2Cl2(g) + HCl(g)
Calculate the standard heat of formation in kilojoules for the reaction using the following measured heats of formation.
HCl(g) + CH3Cl(g) --> CH4(g) + Cl2(g) Delta H = +98.3 kJ
CH3Cl(g)+ Cl2(g) --> CH2Cl2(g) + HCl(g) Delta H = -104kJ
Provide complete and step by step solution for the question and show calculations and use formulas.