On the theoretical basis of thermokinetics, a novel method for determination of rate constants for simple order reactions-thermogram- area-difference method has been proposed in this paper. In order to test the validity of this method, the saponification of ethyl butyrate and ethyl benzoate in aqeous ethanol solvent and the formation of hexamethylene tetramine in aqueous solution have been examined. The rate constants calculated by this method are in agreement with those published in the literature, and therefore the thermogram-area-difference method is believed to be correct.

Key words: CHEMICAL KINETICS, CHEMICAL THERMODYNAMICS, TIME QUANTITIES, CHEMICAL REACTION, RATE