E. Princz et al., KINETIC EXCHANGE STUDIES OF METAL-ION SUBSTITUTION IN EDTA CHELATES FE(III) - UO(2)EDTA EXCHANGE, Journal of radioanalytical and nuclear chemistry, 199(4), 1995, pp. 317-324
A kinetic study of the exchange reaction between UO(2)EDTA complex and
Fe(III), at a constant ionic strength of 0.1, over the concentration
range of 5x10(-3) - 1x10(-2) M of each reactant and pH 4.5 - 5.5 has b
een carried out radiometrically. The rate of the exchange process can
be expressed by the equation: R=k1[UO(2)EDTA][Fe] + k(2)[EDTA][H+]. 1.
The activation parameters calculated were Delta H = 25.95 kJ mol(-1)
and Delta S = 0.67 kJ mol(-1) K-1.