DOI: https://doi.org/10.30970/jps.04.159
VISCOSITY AND CONDUCTIVITY OF Ni(II) SALTS OF WATER SOLUTIONS
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Journal of Physical Studies 4(2), 159–164 (2000)
DOI: https://doi.org/10.30970/jps.04.159 VISCOSITY AND CONDUCTIVITY OF Ni(II) SALTS OF WATER SOLUTIONS |
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Kyiv Taras Shevchenko National University,
Physical Chemistry department,
60 Volodymyrs'ka Str., Kyiv, UA-01033, Ukraine
Electroconductivity and viscosity of sulfate, chloride, and nitrate of Ni(II) were studied in the wide concentration range at temperatures from 273 to 305 K. It was shown that the using of viscosity data may broaden the concentration interval of the application of Robincon-Stokes equation to describe experimental values of conductivity. The necessity of concentration dependence from the parameter of distance between ions is shown. The calculation of equilibrium composition has shown a higher dergee of association in nickel sulfate solutions comparing with the chloride and nitrate solutions causing distinctions of physical-chemical properties of the studied electrolytes. A study of the ionic $B_i$-coefficient has shown that the main act in the interaction of these electrolytes with solvent is determined by Ni$^{2+}$ ion which stipulates a change in water the structure in the neighborhood. The same analysis confirms that in aqueous solutions NO$_3^-$ and Cl$^-$ are structure breaking, and SO$_4^{2-}$ is structure making ions.
PACS number(s): 66.20.+d.