Ionic medium effects on equilibrium constants Part II. Binary systems comprising some bivalent cations and monocarboxylates in aqueous solution.
Simple equations were derived relating stoichiometric protonation constants of several monocarboxylates and formation constants associated with 1:1 complexes involving some bivalent cations and selected monocarboxylates, in aqueous sodium perchlorate media, at 25 degrees C, as a function of ionic strength (I), allowing the interconversion of parameters from one ionic strength to another, up to I=3.00 M. In addition, thermodynamic formation constants as well as activity coefficients of the species involved in the equilibria were estimated. The results show that the proposed calculation procedure is very consistent with critically selected experimental data.
Pezza
L
L
Instituto de Química, UNESP, Araraquara, SP, Brazil.
Molina
M
M
Melios
C B
CB
de Moraes
M
M
Tognolli
J O
JO