الملخص

The work is concerned with the determination of acidity for four aliphatic Schiff bases, prepared by reaction of benzyl with aliphatic nitrogen bases as ethanol amine, 1,2-ethane diamine, 1,3-propane diamine and benzoyl, in addition to dibenzamide for a comparative study. The acidities of all compounds under investigation are calculated by using the half integral potentiometric method, as founded to be simple, easy and with an accuracy of±0.00l pKa unite. The acidities of all compounds are calculated at a rang of temperatures between (293-313)k.