With consideration of thermal inertia, we suggested a more accurate mathematical model for thermokinetics of first-order reactions in titration period by titration calorimetry. This model can be applied to more chemical reactions of which the half-value period time can be as small as about ten seconds. In this paper, thermokinetics of the saponification of ethyl acetate in doubly distilled water was studied by titration calorimetry. The reliability of this titration calorimetric model for studying thermokinetics of first-order reactions has been verified by the experimental results obtained.

Key words: THERMODYNAMICS, CALORIMETRIC TITRATION, ETHYL ACETATE, SAPONIFICATION