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Viscometric and Thermodynamics Study of Bi-Univalent Mixed Electrolytes in Aqueous Solutions at 293.15, 303.15 and 313.15 K
Corresponding Author(s) : Durgesh Gautam
Asian Journal of Chemistry,
Vol. 29 No. 12 (2017): Vol 29 Issue 12
Abstract
Viscosities (h) and apparent molar volumes (Vf) of the solutions of bi-univalent mixed electrolytes in aqueous solutions have been determined at 293.15, 303.15and 313.15 K. From these data the values of coefficients A and B of Jones-Dole equation and that of Vf0 and Sv of Masson’s equation have been obtained. Besides the activation thermodynamic quantities Dμ20#, DH20# and DS20# of viscous flow have also been calculated. The variation of fv with y, fraction of ionic strength due to the first electrolyte in the mixture of two electrolytes at different temperatures is linear. From h and fv data, the values of coefficients A and B of Jones-Dole equation and that of Vf0 and Sv of Masson’s equation have been obtained. Besides the activation thermodynamic quantities Dμ20#, DH20# and DS20# of viscous flow have also been calculated for the mixed electrolytes in aqueous solutions. It is seen that the values of Dμ20# are much larger as compared to those of Dμ10# for all the bi-univalent mixed electrolytes. The values of TDS20# are negative while those of DH20# are positive and that DH20# > TDS20#. Thereby suggesting that ion-solvent interaction for the mixed electrolyte system, are nearly complete in the ground state. Further these the values of TDS20# and DH20# indicate the transition state is associated with the bond breaking and increase in order.
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References
H.L. Friedman and P.S. Ramanathan, J. Phys. Chem., 74, 3756 (1970); https://doi.org/10.1021/j100715a009.
H.L. Andersan and R.H. Wood, ed.: F. Frank, Water: A Comprehensive Treatise, Plenum, New York, vol. III, Chap. 2 (1973).
K.J. Patil, S.M. Manwatkar and S.S. Dhondge, Indian J. Chem., 33A, 4 (1994).
K.J. Patil, S.M. Manwatkar and S.S. Dhondge, Indian J. Chem., 34A, 950 (1995).
G. Jones and M. Dole, J. Am. Chem. Soc., 51, 2950 (1929); https://doi.org/10.1021/ja01385a012.
D. Gautam and M. Singh, J. Indian Chem. Soc., 84, 876 (2007).
J.D. Panday and Y. Akhtar, Indian J. Chem., 36A, 614 (1997).
D.O. Masson, Philos. Mag., 8, 218 (1929); https://doi.org/10.1080/14786440808564880.
A. Ali, A.K. Nain, N. Kumar and M. Ibrahim, Proc. Indian Acad. Sci. Chem. Sci., 114, 495 (2002); https://doi.org/10.1007/BF02704193.
D. Feakins, D.J. Freemantle and K.G. Lawrence, J. Chem. Soc., Faraday Trans. I, 70, 795 (1974); https://doi.org/10.1039/f19747000795.
A.N. Kannapan and V. Rajendran, Indian J. Phys., B66, 135 (1992).
M.L. Parmar, D.K. Dhiman and R.C. Thakur, Indian J. Chem., 41A, 2032 (2002).