Search for to the description of the influence of various factors on interactions in liquids.

What is it about?

Presented in this manuscript are our experimental results over the last 15 years on the relationship between internal pressure and intermolecular interactions in liquids, supported by new extensive theoretical background. We presented an analysis of thermodynamic nature of internal pressure. On the other hand, our recent research allowed us to reveal that the internal pressure is created by the inherent internal molecular force field of all structural units of liquid.

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Why is it important?

To make a long story short, we deem it is necessary to fill the gap in the internal pressure nature and its application to develop a new thermodynamic scale of states of the force field of liquids. Our article is methodological in nature and is devoted to several interrelated issues: the justification of the physical nature of the internal pressure of liquid-phase systems, the search for the relationship between the internal pressure and the cohesion energy density and, ultimately, the search and justification of the fundamental parameter that could characterize the force field of structural units of different liquid-phase systems and its transformation depending on temperature, pressure, and chemical composition

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