Phase Rule

📊 advanced

$$F = C - P + 2$$

Relates the number of degrees of freedom, components, and phases in a system at equilibrium.

Variables & Units

$F$

Degrees of freedom

Unit: Integer

$C$

Components

Unit: Integer

$P$

Phases

Unit: Integer

Key Information

📐 Derived From

Thermodynamic equilibrium of chemical potentials.

💡 Example

Determining if a substance can exist at a triple point.

🔧 Applications

Metallurgy and food science.

⚠️ Constraints

System must be in equilibrium.

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