 Welcome back Mechanical AIR. Did you know that adiabatic flame temperature is what determines whether a certain compound can be used as a boost for your car? This makes us wonder what is adiabatic flame temperature? Before we jump in, check out the previous part of this series to learn about what combustion is. Now, enthalpy of formation for a compound, a prerequisite to understand adiabatic flame temperature is the change of enthalpy during the formation of one mole of the substance from its constituent elements with all substances in their standard states. Adiabatic flame temperature now is the temperature attained by the products of combustion when fuel is burned with air or oxygen. Adiabatic flame temperature of a particular compound is difficult to measure when the combustion of a mixture of fuel and air occurs inside the furnace and is calculated theoretically using heat balance. Hence, we first saw what the enthalpy of formation is and then went on to see what adiabatic flame temperature is.