Phase Rule Calculator
Calculate degrees of freedom using Gibbs phase rule F = C - P + factor for chemical thermodynamics.
Gibbs Phase Rule Calculator
Gibbs' phase rule relates the number of components, phases, and intensive variables that can change independently in a system at equilibrium.
$$F = C - P + \text{factor}$$
where $F$ is degrees of freedom, $C$ is the number of independent components, $P$ is the number of phases, and factor is 2 when both pressure and temperature can vary, 1 when one is fixed, and 0 when both are fixed.
Example: one component present as solid and vapor ($C=1$, $P=2$) with variable $P$ and $T$ gives $F = 1 - 2 + 2 = 1$. One intensive variable (temperature or pressure) can change while maintaining both phases.
Related: Vapor Pressure Calculator and Partial Pressure Calculator.
Frequently Asked Questions
What is a phase in Gibbs phase rule?
A phase is a region with uniform composition and physical properties, such as solid, liquid, gas, or separate immiscible liquids.
What counts as a component?
A component is the minimum number of chemically independent species needed to describe all phases. It is not simply the number of chemical formulas present.
What are degrees of freedom?
Degrees of freedom are the number of intensive variables (like temperature, pressure, or composition) that can change independently without altering the number of phases.
When is factor equal to zero?
Factor is zero when both pressure and temperature are held constant, such as in some isothermal-isobaric analyses.
Related Tools
Confidence Interval Calculator
Reverse Integer Digits
Adding and Subtracting Integers Calculator
URL Parser
Cat Pregnancy Calculator
Simple Calculator
Generate Unicode Letters
Loan Repayment Calculator
Lewis Number Calculator
RGB To Pantone Converter
kPa to PSI Converter
Torque Calculator
JSON to PHP Array Converter
Exponential Decay Calculator
Daily Time Savings Calculator
Matrix Subtract Calculator
Goal SIP Calculator
Convert Image To HEX Codes
Catalan Number Generator
Encrypt Decrypt