The influence of the temperature and the specific volume on the viscosity of liquids II
โ Scribed by W.R. van Wijk; W.A. Seeder
- Publisher
- Elsevier Science
- Year
- 1939
- Weight
- 297 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0031-8914
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โฆ Synopsis
The volume in the closely packed state and the configurational heat of a number of liquids have been calculated from viscosity data at moderately elevated p~essures. The configurational heat calculated in this way is the higher as the internal structure of the liquid is more pronounced.
The same volume is found for a CHa group both in the straight chain primary alcohols and in the normal paraffins.
It is shown that mercury behaves like a liquid without internal structure although it resembles the alcohols in that its viscosity is not mainly dependent on the density. This is, however, ascribed to the small thermal expansion of mercury as compared with organic liquids. *) Special mechanisms by which the momentum transport may take place are for instance gas kinetic collisions, interactions of the same nature as occur in chemical bonds and diffusion; although diffusion is probably only of minor importance in ordinary liquids.
๐ SIMILAR VOLUMES
A new formula representing the vieeoelty temperature dePeudeuee is proposed. The formula IS valid for a varkty of hquids, e.g. 8ssc&ted and non-8seoeMed liquids, hydrucarbons and nuxtures of hydree8rbous. water, eolutious of sueruee iu wster and of sulphuric 8eld m water also fit into the system. Th