Does entropy increase behind surface tension?

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SUMMARY

The discussion centers on the relationship between surface tension and entropy in liquids. It establishes that minimizing the surface area of a liquid maximizes total entropy in a constant-volume process, as surface tension is directly linked to the partial derivative of Helmholtz energy concerning surface area. This indicates that molecules achieve higher entropy levels when situated in the interior of a liquid rather than at the surface. The conclusion affirms that entropic gain occurs when surface area is minimized.

PREREQUISITES
  • Understanding of surface tension concepts
  • Familiarity with Helmholtz energy and its derivatives
  • Knowledge of thermodynamic principles, particularly in constant-volume processes
  • Basic grasp of entropy and its implications in physical chemistry
NEXT STEPS
  • Explore the implications of surface tension on liquid behavior in "Thermodynamics of Surfaces and Interfaces"
  • Study the mathematical formulation of Helmholtz energy and its applications in "Statistical Mechanics"
  • Investigate the role of entropy in phase transitions in "Physical Chemistry" textbooks
  • Learn about experimental methods to measure surface tension and entropy changes in liquids
USEFUL FOR

Physical chemists, thermodynamic researchers, and students studying the properties of liquids and interfaces will benefit from this discussion.

larsa
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Is there any entropic gain when the surface of a liquid is minimised? Per example, molecules "enjoy" maximum entropy when they are at the interior. Is this valid?
 
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Surface tension is related to the partial derivative of Helmholtz energy with respect to surface area of an interface, which means that minimizing the surface area also maximizes total entropy in a constant-volume process.
 
hilbert2 said:
Surface tension is related to the partial derivative of Helmholtz energy with respect to surface area of an interface, which means that minimizing the surface area also maximizes total entropy in a constant-volume process.

Thank you very much
 

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