Interaction between phases in the liquid–gas system
| Autor: | R. S. Berry, Boris M. Smirnov |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Work (thermodynamics)
Materials science Solid-state physics 010405 organic chemistry Thermodynamic equilibrium Liquid gas Bubble General Physics and Astronomy Thermodynamics chemistry.chemical_element 010402 general chemistry 01 natural sciences Oxygen 0104 chemical sciences Physics::Fluid Dynamics Solvent chemistry Phase (matter) Physics::Chemical Physics Astrophysics::Galaxy Astrophysics |
| Zdroj: | Journal of Experimental and Theoretical Physics. 123:134-142 |
| ISSN: | 1090-6509 1063-7761 |
| Popis: | This work analyzes the equilibrium between a liquid and a gas over this liquid separated by an interface. Various gas forms exist inside the liquid: dissolved gas molecules attached to solvent molecules, free gas molecules, and gaseous bubbles. Thermodynamic equilibrium is maintained between two phases; the first phase is the liquid containing dissolved and free molecules, and the second phase is the gas over the liquid and bubbles inside it. Kinetics of gas transition between the internal and external gas proceeds through bubbles and includes the processes of bubbles floating up and bubble growth as a result of association due to the Smoluchowski mechanism. Evolution of a gas in the liquid is considered using the example of oxygen in water, and numerical parameters of this system are given. In the regime under consideration for an oxygen–water system, transport of oxygen into the surrounding air proceeds through micron-size bubbles with lifetimes of hours. This regime is realized if the total number of oxygen molecules in water is small compared with the numbers of solvated and free molecules in the liquid. |
| Databáze: | OpenAIRE |
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