In this paper,we have given a common calculating formulum of the potential atthe equivalence point in an oxidation-reduction titration:E等=(n_1E_1~(of)+n_2E_2~(of))/(n_1+n_2)+(0.059)/(n_1+n_2)log((n_2a)/(n_1b))~a·((n_1d)/(n_1e))~d·[Red_1]~(d-e)·[Red_2]~(a-b)and discussed the applied possibility of the formulum
Sulpha-drug sensitive electrodes have been suggested for the potentiometric titration of sulpha-drugs using a standard sulphuric acid solution as titrant with distinct potential jump at the equivalence point and a maximum error of 0.7%.
This paper tries to derivate the formula for the titration error of the equivalence reaction according to the characteristic that when the reaction ( mole ratio: 1 : 1 ) takes place near the equivalence point the PH ( PM ) changes are equivalent, and discusses the error of the end point of such reactions and the related calculations with graphs.
For multiple criteria decision making problem of which the set of alternatives is finite, a concept of efficient equivalence point set is offered, and a method for finding β major in weight efficient solutions and β major in weight optimal solutions through the efficient equivalence point set is proposed
On the other hand, influences of chitosan solution concentration, viscosity, degree of deacetylation and measuring temperature on the result of equivalence point of two abrupt change conductometric titration were also investigated.
The result obtained showes that BaCl2 could be exceeded by a factor of 0. 2 to 2. 2,precipitation of BaSO4 needn't be removed and alcohol needn't be added to decrease the solubility of BaSO4, indicator colour change is rather sharply in the equivalence point, relative error is less than 1. 0%.
Accuracy of determination of deacetylation degree of chitosan by two abrupt change conductometric titration was studied, and effects of chitosan solution concentration, viscosity and deacetylation degree on the result of equivalence point were also investigated.