1991/02/01 by Alexander Apelblat, Josef Barthel
paper · doi:10.1515/zna-1991-1-222
Abstract Conductance measurements of citric acid and neutral citrates (tri-lithium citrate, tri-sodium citrate and tri-potassium citrate) were performed in water at 278.15 to 308.15 K. The equilibrium constants for the primary and secondary steps of dissociation, Kx and K2, and the limiting conductances, λ 0 (H 2 Cit - ), λ°(1/2 HCit2 - ), and λ 0 (1/3 Cit3 - ) are reported as a function of temperature. They are obtained by application of the Quint and Viallard conductance equation. The enthalpies of dissociation are estimated.