To what extent are thermodynamic properties of water argon-like?

Fisenko, Anatoliy I.; Malomuzh, N. P.; Oleynik, A.V.

doi:10.1016/j.cplett.2007.11.036

Cited by 30 publications

(20 citation statements)

References 14 publications

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“…In addition, the temperature behavior of main thermodynamic parameters of water such as the fractional molecular volume, evaporation heat, and others, has an argon-like character with a quite satisfactory accuracy. These conclusions are completely confirmed by the results of works [17,22,23].…”

Section: Discussion Of the Results Obtainedsupporting

confidence: 81%

“…Our conclusions are based on the results obtained for the temperature dependences of the self-diffusion and kinematic shear viscosity coefficients, specific volume, evaporation heat [22], and heat capacity of water [17,23,24]. In addition, we analyze the frequency shift for valence hydrogens in the water molecule [25] and the variation of its dipole moment under the action of environmental molecules [3].…”

Section: Introductionmentioning

confidence: 99%

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Physical Nature of Hydrogen Bond

Zhyganiuk

Malomuzh

2015

Ukr. J. Phys.

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PHYSICAL NATURE OF HYDROGEN BOND PACS 82.30.RsThe physical nature and the correct definition of hydrogen bond (H-bond) are considered. The influence of H-bonds on the thermodynamic, kinetic, and spectroscopic properties of water is analyzed. The conventional model of H-bonds as sharply directed and saturated bridges between water molecules is incompatible with the behavior of the specific volume, evaporation heat, and self-diffusion and kinematic shear viscosity coefficients of water. On the other hand, it is shown that the variation of the dipole moment of a water molecule and the frequency shift of valence vibrations of a hydroxyl group can be totally explained in the framework of the electrostatic model of H-bond. At the same time, the temperature dependences of the heat capacity of water in the liquid and vapor states clearly testify to the existence of weak H-bonds. The analysis of a water dimer shows that the contribution of weak H-bonds to its ground state energy is approximately 4-5 times lower in comparison with the energy of electrostatic interaction between water molecules. A conclusion is made that H-bonds have the same nature in all other cases where they occur.K e y w o r d s: hydrogen valence vibrations of a water molecule, frequency shift, hydrogen bond, electrostatic origin.The hydrogen bond is a phlogiston of the 20-th century. L. BULAVIN

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Section: Discussion Of the Results Obtainedsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Physical Nature of Hydrogen Bond

Zhyganiuk

Malomuzh

2015

Ukr. J. Phys.

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“…Therefore, the role of hydrogen bonds in the formation of a specific volume diminishes for methanol. In works [9][10][11], it was shown that the account for hydrogen bonds increases the specific volume of a molecule by a few percent.…”

Section: Densities Of Primary Alcohols From the Methanol Seriesmentioning

confidence: 99%

Extraordinary Properties of Alcohols from the Homologous Series of Methanol

2020

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Non-trivial properties of thermodynamic quantities such as the density, the critical and triple point temperatures, and their ratio, as well as the optical and dielectric properties, have been analyzed for primary alcohols from the methanol series. The aim is to reveal relationships among their values measured at the same temperatures for alcohols with different ordinal numbers m’s in the methanol series. It is shown that the non-monotonic character of the temperature dependences of alcohol densities is associated with methanol rather than ethanol, as may seem at first glance. The critical temperature of methanol also deviates from the quasilinear dependence of the critical alcohol temperatures on m. With the growing m, the ratio between the critical and triple-point temperatures for alcohols is shown to tend to the corresponding value for water. Simple linear dependences of the electronic and effective static polarizabilities of alcohol molecules on m are established. The transverse and longitudinal components of the polarizability tensor for alcohol molecules are found. The dipole moments of the closest neighbor molecules in the alcohols are proved to anticorrelate, i.e. to orient in opposite directions.

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“…The careful analysis of the temperature dependence for ( ) w t ν allows us to conclude that n H (t) changes linearly with temperature [25][26][27]: (5) Near the triple and critical points values of n H (t) are correspondingly equal to: n H (t = 0.42) ≈ 0.26 and n H (t = 1) ≈ 0.6, that satisfactory correlates with results of computer modeling in [28,29] and estimates of the dimerization degree of water molecules near the critical point [30].…”

Section: D) Manifestation Of H-bonds In Water Eosmentioning

confidence: 99%