Qy. Cai et al., A NONLINEAR-REGRESSION MODEL APPLIED TO KINETIC-STUDIES OF ESTER HYDROLYSIS WITH A SURFACE-ACOUSTIC-WAVE SENSOR, Talanta, 43(5), 1996, pp. 699-705
A non-linear regression model was derived for the simultaneous determi
nation of the rate constant in alkaline hydrolysis of esters and the i
nitial concentration of esters based on the linear relationship betwee
n the frequency response of the surface acoustic wave sensor system an
d the conductivity oi the solution. The model was tested theoretically
and experimentally with the methyl-, ethyl-, and n-propyl-acetate sys
tems. The corresponding rate constants estimated at 25 degrees C are 0
.147; 0.103 and 0.0671 respectively.