The standard enthalpy of formation of a compound is the change in enthalpy when 1 mol of the compound is formed from its constituent elements. All substances must be in their most stable states at 100 kPa and 25 °C.
write a thermochemical equation for the formation of 1 mol of octanol.
8C(s) + 9H₂(g) + ½O₂(g) → C₈H₁₇OH(l)