Indian Journal of Advances in Chemical Science Volume: 5, Issue 4: , September 2017

 
             
   
   

ISSN No.: 2320-0898 (Print); 2320-0928 (Electronic)

DOI:  10.22607/IJACS.2017.504009

 

   

Research Article

 

      Investigation of Diverse Interactions of Lithium Hexafluoroarsenate Prevailing in Pure and Mixed Industrial Solvent Systems by Physicochemical Methodology    
Biraj Kumar Barman, Deepak Ekka, Rajani Dewan, Mahendra Nath Roy*
ABSTRACT
 

Precise measurements of electrolytic conductivities, densities, and viscosities of lithium hexafluoroarsenate (LiAsF6) have been reported in w1=0.00, 0.25, 0.50, 0.75, 1.00 mass fraction of ethylene glycol in methanol at 298.15 K. The limiting molar conductivities (Λ0), association constants (KA), and the distance of closest approach of the ions (R) have been evaluated using the Fuoss conductance equation (1978) for ion-pair formation. The Walden products have been obtained and discussed. Apparent molar volumes (fV) and viscosity B-coefficients have been determined from the density (ρ) and viscosity (h) data, respectively. The limiting apparent molar volumes (fVo), and experimental slopes (SV*) have been obtained from Masson equation and interpreted in terms of ion-solvent and ion-ion interactions, respectively. The viscosity data have been analyzed using Jones-Dole equation, and the derived parameters A- and B-coefficient have also been interpreted for ion-ion and ion-solvent interactions, respectively, in the solutions.

     
     

Key words:  Lithium hexafluoroarsenate, Ethylene glycol, Methanol, Conductivity, Density, Viscosity.

 

 

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