For 10 points, name this thermodynamic quantity symbolized H.
The derivative of the log of the equilibrium constant equals the change in this quantity divided by the gas constant times temperature squared, according to the van't Hoff equation. This quantity remains constant during a Joule-Thomson process. At constant pressure, its change is equal to the change in internal energy. Change in this quantity is equal to change in Gibbs free energy plus temperature times change in entropy, and its path-independence is established by Hess's Law. For 10 points, name this thermodynamic quantity symbolized H.
The derivative of the log of the equilibrium constant equals the change in this quantity divided by the gas constant times temperature squared, according to the van't Hoff equation.
enthalpy [prompt on H before mentioned]