Etude des ecarts a la linearite de la methode lineaire de dosage par titrimetrie thermometrique-II Courbures des thermogrammes et erreur sur l'appreciation du point equivalent lorsque la reaction de dosage est equilibree

Abstract

The reversibility of the determination reaction is the most frequent cause of deviations from linearity of thermometric titration curves. Because of this, determination of the equivalence point by the tangent method is associated with a systematic error. The authors propose a relationship which connects this error quantitatively with the equilibrium constant. The relation, verified experimentally, is deduced from a mathematical study of the thermograms and could probably be generalized to apply to other linear methods of determination.