This quantity remains constant in the Joule-Thomson effect. It equals internal energy plus the product of pressure and volume. The Gibbs Free Energy is given by this quantity minus the product of temperature and entropy. For a multi-step reaction, it can be calculated independently of the pathway and is equal to the sum of its changes in each step according to (*) Hess's Law. It is positive for an
This quantity remains constant in the Joule-Thomson effect. It equals internal energy plus the product of pressure and volume. The Gibbs Free Energy is given by this quantity minus the product of temperature and entropy. For a multi-step reaction, it can be calculated independently of the pathway and is equal to the sum of its changes in each step according to (*) Hess's Law. It is positive for an endothermic reaction. For 10 points, name this "heat content" of a thermodynamic system, symbolized capital H.
This quantity remains constant in the Joule-Thomson effect. It equals internal energy plus the product of pressure and volume.
{enthalpy} [accept {H} until it is read; do not accept or prompt on "{lowercase} '{h}'"]