Conductometric study on the benzoic acid in water+methanol systems at different solution temperatures

This research article explores the results of the ionsolvent interaction with the aid of electrical conductivity law of benzoic acid in triple distilled water and different amounts of methanol at 293 K, 303 K, 313 K, and 323 K. The specific conductance obtained from the conductivity meter was examined using Shedlovsky and KrausBray plots. The limiting molar conductance ) values obtained using the Shedlovsky and KrausBray models.  values obtained from theShedlovsky and KrausBray models were found to be in good agreement with each other. The association constant (Ka) values obtained from the Shedlovsky plots, whereas dissociation constant (Kd) values obtained from the KrausBray plots. The thermodynamic parameters such as activation energy (Ea), free energy of adsorption (∆Ga), adsorption enthalpy (∆Ha) and adsorption entropy (∆Sa) values are evaluated in order to study the nature of ionsolvent interaction. The negative ∆Ga values showed the spontaneous ionpair association process