Improvemont of the Calculating Methods of the Concentrations of Polybasic Acid

According to experimental data, when the concentrations of polybasic acids were obtained,the conditional stability constants were calculated directly. And they were optimized by the modified simplex method. These results agree with the actual results.On the basis of the calculating results of various polybasic acid systems,the relative error of the concentration,which were obtained using the modified simplex method, was less than one percent.