Electrochemical Studies of LaCl3 and GdCl3 Dissolved in Fused LiCl‐KCl

The thermodynamic properties of solutions of lanthanum or gadolinium chlorides in mixed molten LiCl‐KCl were determined by electromagnetic force (emf) measurements of LaCl 3 or GdCl 3 formation cells. The temperature dependence of the emf between 380 and 590°C was used to calculate the Gibbs energy and the enthalpy of formation of dissolved LaCl 3 or GdCl 3 . The electrode processes of La(III) and Gd(III) reduced on a tungsten electrode were investigated by cyclic voltammetry and chronopotentiometry.