1979
DOI: 10.1139/v79-024
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Densities and kinematic viscosities of tetra-n-butylammonium iodide–nickel(II) chloride melts

Abstract: Densities and kinematic viscosities of molten mixtures of nickel(II) chloride in tetra-n-butylammonium iodide have been measured as functions of temperature and composition. The data on the kinematic viscosity have been analyzed using both Arrhenius and non-Arrhenius type equations. The heat of activation, the entropy of activation, and the free energy of activation for viscous flow have been computed. At higher concentrations a slight tendency towards non-Arrhenius viscous behaviour is observed. The free ener… Show more

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“…A~ ~ : constant, K [8] where n = E,/EA, the ratio of the activation energies for the viscous and the conductance flows, appear to dently for Y : r and Y = k. Equation [8] seems to be a general representation of the Walden's rule (An -constant) and reduces to the latter form when the activation energies for the two kinds of flow are the same (i.e., n --1) as is the case with aqueous and nonaqueous systems.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…A~ ~ : constant, K [8] where n = E,/EA, the ratio of the activation energies for the viscous and the conductance flows, appear to dently for Y : r and Y = k. Equation [8] seems to be a general representation of the Walden's rule (An -constant) and reduces to the latter form when the activation energies for the two kinds of flow are the same (i.e., n --1) as is the case with aqueous and nonaqueous systems.…”
Section: Resultsmentioning
confidence: 99%
“…The physicochemical properties of both inherent and induced glass-forming melts have been investigated recently (1)(2)(3)(4)(5)(6)(7)(8). Pure as well as binary hydrated melts and mixtures of hydrated melts with simple salts refer to the former, while the transition metal salt-rich mixtures of tetra-alkyl-ammonium or phosphonium salts and also a few of the binary molten mixtures of simple nitrates and halides belong to the latter case (1,5,6).…”
mentioning
confidence: 99%