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Title: ?ACTIVATION PARAMETERS OF BUTANE AND DECANE SULFONIC ACIDS (Na-SALT) IN PURE AND MIXED SOLVENTS AT DIFFERENT TEMPERATURES BY VISCOSITY MEASUREMENTS
Authors: Shaista Jabeen, Shagufta Akber, Fahim Uddin
Journal: Pakistan Journal of Scientific and Industrial Research (Series B: Biological Sciences)
Publisher: PCSIR Scientific Information Centre
Country: Pakistan
Year: 2000
Volume: 43
Issue: 1
Language: English
Keywords: Viscosity,Jones-Doles parametersActivationparameters,Ion-ion and ion-solvent interactions.
The viscosities of the various solutions of I-Butane Sulfonic Acid (Na-SaJt) and l-Decane Sulfonic Acid (Na-Salt) in pure and mixed solventshavebeenmeasured at fourtemperatures 298, 303,308and 313K.The measured data have been used to calculate viscosity coefficients of Jones-Dole equation. These coefficients have been found to be dependent on temperature and solvent composition.The positive valuesofB coefficientsfor butaneanddecane sulfonic acids (Na-salt) in pure and mixed solvents led to the conclusion that ion-solvent interaction is not so strong. Activation parameters such as energy of activation (Ell *), free energy change of activation (~G*) and entropy change of activation (~S*) have been evaluated at different temperatures in pure and mixed solvents.
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