Consider the combustion of octane with 400% theoretical air (not excess air). If the octane (liq) and air enter the combustion chamber at 25C and 100 kPa and the products exit at 1000K and 100 kPa, determine the heat transfer,Q. (Q=Hproduct Hreactant)

Use this

hi(T)=hf,io(Tref)+hs,i(T) Standardized enthalpy Enthalpy of formation Sensible enthalpy at temperature T at standard reference change in going from state (Tref,Po)Tref to T