Relationships between the internal pressure, the cohesive energy, and the surface tension of liquids

Yizhak Marcus

doi:10.1080/00319104.2016.1230739

Relationships between the internal pressure, the cohesive energy, and the surface tension of liquids

Yizhak Marcus^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The relationship between the internal pressure P_int on the one hand and the cohesive energy density ced on the other and the ratio of the surface tension to the cube root of the molar volume σ/V^1/3 (also called the Gordon parameter) was examined for a large number of liquids. These consisted of four classes: molecular liquids, liquid metals, room temperature ionic liquids (RTILs), and molten salts. Linear dependences, rather than proportionalities suggested by theory, were obtained in all cases, their slopes being independent of the type of the liquid (the exceptions being noted), but differ for P_int and ced.

Original language	English
Pages (from-to)	522-531
Number of pages	10
Journal	Physics and Chemistry of Liquids
Volume	55
Issue number	4
DOIs	https://doi.org/10.1080/00319104.2016.1230739
State	Published - 4 Jul 2017

Bibliographical note

Publisher Copyright:
© 2016 Informa UK Limited, trading as Taylor & Francis Group.

Keywords

cohesive energy density
Internal pressure
liquid metals
molecular liquids
molten salts
room temperature ionic liquids
surface tension

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10.1080/00319104.2016.1230739

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abstract = "The relationship between the internal pressure Pint on the one hand and the cohesive energy density ced on the other and the ratio of the surface tension to the cube root of the molar volume σ/V1/3 (also called the Gordon parameter) was examined for a large number of liquids. These consisted of four classes: molecular liquids, liquid metals, room temperature ionic liquids (RTILs), and molten salts. Linear dependences, rather than proportionalities suggested by theory, were obtained in all cases, their slopes being independent of the type of the liquid (the exceptions being noted), but differ for Pint and ced.",

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AB - The relationship between the internal pressure Pint on the one hand and the cohesive energy density ced on the other and the ratio of the surface tension to the cube root of the molar volume σ/V1/3 (also called the Gordon parameter) was examined for a large number of liquids. These consisted of four classes: molecular liquids, liquid metals, room temperature ionic liquids (RTILs), and molten salts. Linear dependences, rather than proportionalities suggested by theory, were obtained in all cases, their slopes being independent of the type of the liquid (the exceptions being noted), but differ for Pint and ced.

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KW - Internal pressure

KW - liquid metals

KW - molecular liquids

KW - molten salts

KW - room temperature ionic liquids

KW - surface tension

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JO - Physics and Chemistry of Liquids

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Relationships between the internal pressure, the cohesive energy, and the surface tension of liquids

Abstract

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Keywords

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