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| number of degrees of freedom | ||||
| number of mixture components | ||||
| number of phases |
For Pure substance :
and LaTeX Math Inline body C=1
.LaTeX Math Inline body F = 3 - P
It means that 3-phase equilibrium (solid, liquid an gas) has zero degrees of freedom :
and can only exist at fixed Temperature and Pressure, called Triple Point.LaTeX Math Inline body F = 0
The 2-phase equilibrium has one degree of freedom: F=1 and form a smooth line
See also
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Natural Science / Physics / Thermodynamics / Thermodynamic system / Phase / Phase Equilibrium
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