Therefore going from one state function to another state function is independent of the pathway. Energy is a state function, but heat and work are not state functions. Heat is released from the system. Reactants have stronger bonds. Endothermic Products have greater PE than reactants.
Products have stronger bonds.
Energy came from surroundings. Extensive property C p , heat capacity. Intensive property Ex . Hess s Law and Characteristics of Enthalpy Changes Enthalpy is a state function, independent of the pathway. D H, change in enthalpy is the same regardless of the step or steps taken to go from reactants to products.