Water Phase Diagram: Is Vapour-Ice Coexistence at 0K, 0Pa?

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SUMMARY

The discussion centers on the coexistence line of water vapor and ice, specifically questioning whether it begins at the coordinates of 0K and 0Pa. Participants clarify that the actual coexistence point for a saturated ice-water vapor mixture is approximately T=0.01°C and P=0.61169 KPa, rather than at absolute zero. This indicates that the phase diagram of water does not include a coexistence line starting from the origin in the temperature-pressure space.

PREREQUISITES
  • Understanding of phase diagrams in thermodynamics
  • Knowledge of the properties of water at various temperatures and pressures
  • Familiarity with the concepts of saturation and phase transitions
  • Basic grasp of the Kelvin and Pascal units of measurement
NEXT STEPS
  • Research the phase diagram of water and its critical points
  • Study the implications of temperature and pressure on phase transitions
  • Explore the concept of saturation in thermodynamic systems
  • Learn about the behavior of substances at absolute zero
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Students and professionals in the fields of chemistry, physics, and materials science, particularly those interested in thermodynamics and phase behavior of substances.

paweld
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Is it true that the line of coexistence of water vapour and ice starts from
the point p=0, T=0?
 
Physics news on Phys.org
According to my chart, for a saturated ice-water vapor mix, the point is like T=0.01 degC and P=0.61169 KPa.
 
thanks
 

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