Phase Diagram Flashcards
Represents the states of matter that exist as temperature & pressure are varied
Phase Diagram
The temperature above which a gas cannot be liquefied; liquid will no longer exist
Critical Temperature
System that will exist beyond critical pressure and critical temperature
Critical Fluid
A point on a phase diagram at which the liquid and gas phases of a substance have the same density, and so are indistinguishable
Critical Point
The temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.
Triple Point
A relationship for determining the least number of independent variables that can be changed without changing the equilibrium state of the system
Phase Rule
Phase Rule Formula
F = C - P + 2
F - No of degrees of freedome of system that may affect the equilibrium
C - No of componentss
P - No of phases
Gas, Liquid, or Solid
Number of Phase: 1
Degrees of Freedom: 2
Bivariant
Gas-Liquid, Liquid-Solid, or Gas-Solid
Number of Phase: 2
Degrees of Freedom: 1
Univariant
Gas-Liquid-Solid
Number of Phase: 3
Degrees of Freedom: 0
Invariant
As the number of components increase, the degrees of freedom ____
Increases
As the number of phases increases, the degrees of freedom _____
Decreased
As the number of phases increases, the degrees of freedom _____
Decreases
Heat necessary for 1 mole of a gas, solid or liquid to change to another phase
Latent Heat/Molar Heat
The heat absorbed as a substance changes phase from liquid to solid
Heat of Fusion
