How to write a balanced chemical equation for the standard formation reaction of liquid octanol?

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)

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.