Process relative volatility calculator

Calculate binary relative volatility with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use binary relative volatility to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Liquid light-component mole fraction
0.3
Vapour light-component mole fraction
0.6
Binary relative volatility
3.5

Try another scenario

Liquid light-component mole fraction
0.33
Vapour light-component mole fraction
0.6
Binary relative volatility
3.045455
Calculation method

Calculation method

Binary relative volatility

(y/(1−y))/(x/(1−x)), other component fractions are complements.

Symbols and units
a
Liquid light-component mole fraction
b
Vapour light-component mole fraction

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Supplied vapour-liquid compositions. Returns Relative volatility. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Liquid light-component mole fraction: minimum 1e-12, maximum 0.999999999. Vapour light-component mole fraction: minimum 1e-12, maximum 0.999999999.
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