The namesake of this law also proposed the thermoneutrality of exchange reactions in aqueous solutions that Arrhenius would explain via electrolytic dissociation. This law is an expansion of its creator's namesake cycle, an analog to the Bordwell cycle, and it was postulated following its formulator's experiments with creating the hydrates of sulfuric acid. (*) The Born-Haber cycle is an application of this law to find lattice energy, and it is sometimes called the law of constant heat summation. For 10 points, name this law, which states that the enthalpy change of a 
The namesake of this law also proposed the thermoneutrality of exchange reactions in aqueous solutions that Arrhenius would explain via electrolytic dissociation. This law is an expansion of its creator's namesake cycle, an analog to the Bordwell cycle, and it was postulated following its formulator's experiments with creating the hydrates of sulfuric acid. (*) The Born-Haber cycle is an application of this law to find lattice energy, and it is sometimes called the law of constant heat summation. For 10 points, name this law, which states that the enthalpy change of a chemical reaction is independent of the reaction pathway.
The namesake of this law also proposed the thermoneutrality of exchange reactions in aqueous solutions that Arrhenius would explain via electrolytic dissociation.
{Hess}’s law [accept law of constant {heat summation} early]