A study of the stability of alkaline-earth metal complexes with fluoride and chloride ions at various temperatures by potentiometry with ion-selective electrodes.

The complexes of the alkaline earth metals with fluoride and chloride were studied over the temperature range 15-85 degrees . The stability constants of the MX(+) complexes were determined by potentiometry with fluoride and chloride ion-selective electrodes and the appropriate thermodynamic functions (DeltaH(0)(298), DeltaS(0)(298) and DeltaG(0)(298)) were calculated.