- [Determination of enthalpy change of coordinating color reaction by UV-Vis absorption spectrum method].
[Determination of enthalpy change of coordinating color reaction by UV-Vis absorption spectrum method].
Guang pu xue yu guang pu fen xi = Guang pu (2003-08-30)
D Yang, L An, L Chen
PMID12945282
RÉSUMÉ
In this paper, a simple experimental method for the determination of enthalpy change of coordinating color reaction has been proposed and a relation formula between absorption and temperature has been deduced. Using coordinating color reaction of cobalt(II) thiocyanate in Tween-80 medium, the linear relation of this formula has been validated: r = 0.9957 and delta H = -44.7 kJ.mol-1, which is accordant with the result obtained from Van't Hoff equation.