Phase diagram notes
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Transcript of Phase diagram notes
Phase DiagramsA phase diagram shows the conditions at which the distinct phases of matter can occur at equilibrium.
Phase Diagram
Vaporization
Condensation
Sublimation
Deposition
Melting
Freezing
Phase DiagramsTriple Point
The triple point of a substance is the temperature and pressure at which gas, liquid, and solid coexist in thermodynamic equilibrium.
Gas
Liquid
Solid
Phase DiagramsTriple Point
For water, the combination of pressure and temperature are exactly 0.010000 °C and 0.0060373 atm.
At that point, the liquid can boil and freeze at the same time.
Gas
Liquid
Solid
Phase DiagramAccording to the red line on the phase diagram,
if we apply enough pressure to ice, it will melt into liquid water.
What are the practical applications?
Phase DiagramAccording to the red line on the phase diagram,
if we apply enough pressure to ice, it will melt into liquid water.Ice Skating is one application
of this phenomenon.
Phase DiagramsCarbon dioxide
Dry Ice
Phase Diagrams
Dry Ice
Carbon dioxide has a vapor pressure of 830 psi (56.5 atm) at 20 °C.
At 0 °C the pressure inside a CO2 fire extinguisher is about 500 psi. At 30 °C it is about 1000 psi.
Phase DiagramsCarbon