1.00 Lit sample of a mixture of CH4 (g) and O2 (g) measured at 25°C and 740 bar was allowed to react at constant pressure in a Calorimeter which together with its contents had a heat capacity of 1260 Cal/K.The complete combustion of methane to CO2 and H2O caused a temperature rise, in the Calorimeter, of ∆H°comb (CH4) = -215 k Cal mol-1.
