By implementing this method together with the Pitzer approach used for the description of highly concentrated systems, it was possible to determine the thermodynamic functions of the reaction [Eu(CO3)3]3- + CO32- ⇆ [Eu(CO3)4]5- under standard conditions for the first time (ΔH° = 31.4 ± 2 kJ mol-1 and ΔS° = 82 ± 10 J mol-1 K-1). 
THERM