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Title: Transport studies of ion-solvent interactions in acetonitrile-rich regions of benzene and ethanol
Authors: Chauhan, M S
Sharma, K
Kumar, G
Issue Date: Mar-2002
Publisher: NISCAIR-CSIR, India
Abstract: Molar conductance and viscosity of BU4NBPh4, NaBPh4 , BU4NBr, BU4NI , ClO4and NaClO4have been reported in acetonitrile (ACN)-rich regions of benzene and ethanol (EtOH) at 25°C. The conductance data have been analyzed in terms of limiting molar conductance (Λo) and ion-association constant (KA) using Shedlovsky conductance equation. The viscosity data have been analyzed in terms of viscosity A- and B-coefficients of the Jones-Dole viscosity equation. Both Λo and B-coefficients have been resolved into ionic components i.e., limiting molar ionic conductance, (λio) and (B±) values for various ions on the basis of BU4NBPh4 assumption. The effective ionic radii (ri) of BU4N+, Ph4B¯ , Li+, Na+,Br¯ , I¯ and ClO4¯ have been determined from λio values using Gill's modification of the Stokes' law. The ionic B± values for these ions have also been discussed in terms of Einstein's equation. The analysis of the data show that BU4N+ and Ph4B¯ lose their spherical shape, while Li+, Na+,Br¯ , I¯ and ClO4¯  behave as spherical entities during viscous flow process.
Page(s): 483-488
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.41A(03) [March 2002]

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