Dependence of Surface Tension of Near-boiling Non-associated Liquids on Their Molar Volume and Some Critical Constants

Gorbachev, M. Yu.

doi:10.1080/00319100108031665

Cited by 7 publications

(8 citation statements)

References 3 publications

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“…Here it is to be noted that the share of the evaporating molecules of this liquid is less than that of the molecules jumping within its volume. It has been shown [6] that the surface layer of any nonassociated liquid is formed of its vibrating molecules.…”

Section: Methods Of Calculations Evaporation In Nonassociatedmentioning

confidence: 99%

“…For different non-associated liquids it was shown [6] that molecules in their near-surface layers form a peculiar quasi crystal phase. This phase is being formed for the account of jumping molecules quitting the near-surface layers when passing to the gas phase.…”

Section: Methods Of Calculations Evaporation In Nonassociatedmentioning

confidence: 99%

“…The presence of quasi-crystal area consisting of a few surface layers of the liquid (see [6]) is the reason of the fact that molecules moving to the surface layer (from either gas phase or liquid phase) must necessarily be influenced by a potential that has been formed by the molecules of the quasi-crystal area. This potential (from both sides of the very surface layer) will look like a Morse curve.…”

Section: Describing Condensation In Nonassociatedmentioning

confidence: 99%

“…Now let us consider the process of piercing of the evaporating conformationally flexible "hot" molecules through the vibrating molecules of the surface layer. Hereinafter we shall suppose that these vibrating molecules are fixed in one of Journal of Chemistry 5 their conformational states, due to the action of the attractive force field existing between them and also due to the abovementioned absence of the translational jumping motion for the molecules of the surface layer [6]. In other words, it is presupposed that the presence of uncompensated attractive force (the latter causes the surface tension in the investigated liquid and is directed into its volume) leads to the fixation of each molecule of the surface layer in one of its conformations.…”

Section: Towards the Evaluation Of The Constantmentioning

confidence: 99%

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New Semiempirical Equation Describing Evaporation and Condensation in Nonassociated Liquids

Gorbachev¹,

Димогло

2013

Journal of Chemistry

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The consideration of the evaporating and condensing molecules' interaction with the surface layer of nonassociated liquids made it possible to find an equation for relations between the saturated vapor pressure P, from one side, and surface tension, critical temperature, and molar volume of the liquids, from the other side. This equation takes into account the influence of intramolecular conformational transitions of evaporating molecules on the quantity of their energy barrier. There are two types of the condensation process for the nonassociated liquids: soft and hard molecular condensation. For some vapor molecules the surface layer of the liquids behaves as an impenetrable elastic film. In the case of evaporating molecules, their one-particle potential barrier caused by the surface molecules vibration is essentially higher for the conformationally flexible molecules than that for rigid ones.

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Section: Methods Of Calculations Evaporation In Nonassociatedmentioning

confidence: 99%

Section: Methods Of Calculations Evaporation In Nonassociatedmentioning

confidence: 99%

Section: Describing Condensation In Nonassociatedmentioning

confidence: 99%

Section: Towards the Evaluation Of The Constantmentioning

confidence: 99%

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New Semiempirical Equation Describing Evaporation and Condensation in Nonassociated Liquids

Gorbachev¹,

Димогло

2013

Journal of Chemistry

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“…Data for the latter quantities are not plentiful but were found for a representative group of the gases treated here. Indeed, for the 17 liquefied gases for which surface tension data were found [16][17][18][19]140] there is a linear relationship between the surface tension and the solubility parameter at the boiling point as follows:…”

Section: Correlationsmentioning

confidence: 99%

Solubility Parameters of Permanent Gases

Marcus

2016

Journal of Chemistry

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The solubility parameters,δH(Tb), of nonreactive permanent gases at their boiling pointsTb(<290 K) are calculated from individually discussed values of their molar enthalpies of vaporization and densities obtained from the literature. These values are tabulated and where available the coefficients of the temperature dependence expressionδH(T)are also tabulated. The trends noted in theδH(Tb)values are dealt with and the values are compared with those reported in the literature and derived from the solubilities of the gases in various solvents. TheδH(Tb)values are shown to correlate linearly with the depths of the potential wells (attractive interaction energies,ε/kB) for binary collisions of the gaseous molecules and with the surface tensions,σ(Tb), of the liquefied gases.

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