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http://dx.doi.org/10.1021/ac960104l

has been cited by the following article:

• TITLE: Titrimetric Study of the Solubility and Dissociation of Benzoic Acid in Water: Effect of Ionic Strength and Temperature

  AUTHORS: Sa‘ib J. Khouri

  KEYWORDS: Benzoic Acid, Ionic Strength, Thermodynamic Dissociation Constant, Salt Effect

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.6 No.5, April 3, 2015

  ABSTRACT: The apparent acid dissociation constant (Kc) of benzoic acid in water has been determined ti-trimetrically under ionic strength values between 0.00 and 0.50 mol·L﹣1 at a range of temperatures between 16°C and 41°C. The thermodynamic dissociation constant (as pKa) of benzoic acid was determined as 4.176 at 25°C. No regular correlation between pKa of benzoic acid and the temperature in the range was used. The values of pKa are inversely proportional to temperatures between 16°C and 30°C. In this range of temperature, the values of thermodynamic quantities () for the dissociation process of benzoic acid in water were calculated by using Van’t Hoff plot. For this case the dissociation was not favoured through entropy and enthalpy changes. The values of pKa are directly proportional to temperatures between 30°C and 41°C.