Underlying physics of partial pressures

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SUMMARY

The discussion focuses on the concept of partial pressures in gas mixtures, specifically addressing how moisture exists as superheated steam at temperatures below the atmospheric boiling point. It highlights that this state is maintained due to low pressures and the lack of equilibrium. The distinction between evaporation and boiling is emphasized, along with the clarification that vapors are not the same as steam. An everyday example provided is the pressurized steam above boiling water in a closed tea kettle.

PREREQUISITES
  • Understanding of gas laws and partial pressures
  • Basic knowledge of thermodynamics, particularly equilibrium states
  • Familiarity with the concepts of evaporation and boiling
  • Knowledge of steam properties and behavior in closed systems
NEXT STEPS
  • Research the Ideal Gas Law and its application to partial pressures
  • Study thermodynamic equilibrium and its implications for gas mixtures
  • Explore the differences between evaporation and boiling in detail
  • Investigate the properties of steam and its behavior in pressurized environments
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Students of physics, chemists, and anyone interested in the principles of thermodynamics and gas behavior in mixtures.

soundgarden
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How do gases exist at partial pressures in a mixture. Moisture in the air is superheated steam, yet at a temperature well below atmospheric boiling point, implying that the moisture in the air is at very low pressures. How does it maintain this state?
 
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Maybe it hasn't reached equilibrium yet, that's got to be in the thermo book.
 
Evaporation is not (yet) boiling, vapours is not steam. An example of slightly superheated steam in everyday life is the pressurised steam over the boiling water in a closed tea kettle.
 

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