Figure 5
From: Semi-empirical model for Henry’s law constant of noble gases in molten salts
The graph reveals the temperature dependency of \(\Delta G\) in the vaporization of noble gases. \(\Delta G\) varies with temperature, whereas \(\Delta H\) remains constant. As expressed by \(\Delta G = \Delta H - T \Delta S\), at this specific temperature, \(\Delta G \) is less than 0, \(\Delta H\) is greater than 0, and \( T \Delta S\) is greater than 0. As a result, noble gases undergo spontaneous evaporation from 2LiF–\({{\hbox {BeF}}_{2}}\) and and LiF–NaF–KF. The enthalpy of solution indicates the quantity of heat absorbed. This reaction is consistently endothermic (\(\Delta H > 0\)) due to the necessity of sufficient energy to escape the interactions at a constant pressure throughout the dissolution process. The increase in temperature effectively can be seen as adding the energy required to increase the gas to liquid contact surface area.
