Calculate the heat of formation of propane if the heat of combustion is -2220kj/mol.The heat of formation of carbon ( IV) Oxide and water are -393.5 and 285.8 kj/mol respectively.
Heat of formation of propane = Heat of combustion of propane + Heat of formation of carbon (IV) oxide + Heat of formation of water
= -2220 + (-393.5) + (285.8)
= -1727.7 kJ/mol