Another factor is that at very high temperatures there may be significant dissociation reactions. Two of these are the dissociation of water into hydrogen gas and hydroxide radicals and the dissociation of carbon dioxide into carbon monoxide and oxygen gas. Both of these reactions are endothermic and would tend to cool the flame. Another consideration is that if the combustion takes place in the presence of an air atmosphere that contains excess oxygen and nitrogen then these gases would also be heated in the isolated system. This would further reduce the temperature of real flames.
Assignments Reproduce the flame temperature reported above.
Refine the analysis to include the fact that Cp is a function of temperature. Repeat the calculation with other fuels. Other fuels to consider are those used as energy sources in modern society. Methane, methanol, and ethane would make a good set. Next ethene and ethyne should be done.