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Digitale Medien

Thermodynamic properties and viscosities of aqueous 1,1′-dimethyl-4,4′-dipyridinium dichloride solutions at 25°C (1972)

Perron, G. ; Desnoyers, J. E.

Springer

Journal of solution chemistry 1 (1972), S. 537-544

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Details

ISSN: 1572-8927

Schlagwort(e): Heat of dilution ; heat capacity ; density ; apparent molal volume ; viscosity ; 1,1′-dimethyl-4,4′-dipyridinium dichloride ; Paraquat

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: Abstract The densities, heat capacities, heats of dilution, and viscosities of aqueous 1,1′-dimethyl-4,4′-dipyridinium dichloride were measured below 1 m at 25°C. From the standard partial molal volumes and heat capacities and the Bη viscosity coefficients, this salt is shown to be a strong structure breaker. The excess enthalpies, entropies, volumes, and heat capacities all show negative deviations from the limiting Debye-Hückel law for 2:1 electrolytes. These excess functions cannot be explained through association or structural interactions and suggest that, at higher concentrations, this rigid bolaform electrolyte may behave more like a 1:1 electrolyte than a 2:1 electrolyte.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00651730

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