Correcting the microscopic coefficient of surface tension of associated liquids

Ar'ev, I. A.

doi:10.1134/s003602441401004x

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Minimal Radius Of the Suitable Cavity1

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2019

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“…Here m R is the radius of that minimum cavity which is still good for acceptance the solute, 71.95 mN m γ = [16], 1 κ ≈ [15]. Hence This conclusion is extended further to other big nonpolar solutes.…”

Section: Minimal Radius Of the Suitable Cavitymentioning

confidence: 84%

Taking into Account Density Fluctuations in a Solvent in a Model of Dissolution

Ar'ev¹

2019

OJPC

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Earlier it was shown by different authors that there are cavities (vacancies, holes) in any liquid. The cavities should play a prominent role in dissolution processes. Nevertheless this fact was ignored in previous model of dissolution. The sizes of the cavities in different solvents containing benzene molecules were determined using solvent induced spectral shift method. The measurements of S 1 ←S 0 benzene transition spectral shifts permit to conclude that 1) macroscopic excess volumes play an almost negligible role in processes of benzene dissolution in very different solvents and 2) the minimal size of the cavity in water able to accommodate benzene molecule coincides with the solute size. Generalization of this conclusion to other nonpolar aromatics leads to evaluation contraction of the solutes under aqueous solvent influence permits to predict the solubility values of other aromatics in water and to evaluate effect of enhancement hydrate cell around these molecules on solubility.

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Section: Minimal Radius Of the Suitable Cavitymentioning

confidence: 84%