Vapor-Liquid Equilibrium (VLE) Calculator

Calculate Vapor-Liquid Equilibrium (VLE) for binary mixtures using this advanced chemical engineering tool.

Vapor-Liquid Equilibrium (VLE) Calculator

This calculator is designed for chemical engineers and researchers to calculate the vapor-liquid equilibrium for binary mixtures. It helps in determining the composition of vapor and liquid phases in equilibrium, which is critical for designing separation processes like distillation.

VLE Calculator

Results

Vapor Phase Composition N/A
Liquid Phase Composition N/A

Data Source and Methodology

Tutti i calcoli si basano rigorosamente sulle formule e sui dati forniti da 'Chemical Engineering Design' by Coulson & Richardson, 6th Edition.

The Formula Explained

The VLE calculations use the Raoult's law and Dalton's law for ideal mixtures.

y_i = (x_i * P_i^sat) / P

Glossary of Variables

  • Temperature (°C): The operating temperature.
  • Pressure (atm): The operating pressure.
  • Component 1 Mole Fraction: Initial mole fraction in the liquid phase.
  • Component 2 Mole Fraction: Initial mole fraction in the liquid phase.
  • Vapor Phase Composition: Calculated composition in vapor phase.
  • Liquid Phase Composition: Calculated composition in liquid phase.

Frequently Asked Questions (FAQ)

What is Vapor-Liquid Equilibrium (VLE)?

VLE is the condition when both liquid and vapor phases of a substance are in equilibrium with each other at a given temperature and pressure.

Why is VLE important in chemical engineering?

It is crucial for designing separation processes such as distillation, which relies on differences in vapor pressure to separate components.

What are ideal mixtures?

Ideal mixtures follow Raoult's and Dalton's laws, where interactions between different molecules are similar to those between like molecules.

Can this calculator handle non-ideal mixtures?

This basic calculator is designed for ideal mixtures. Non-ideal mixtures require advanced models like Wilson or NRTL.

What units are used in this calculator?

Temperature is in degrees Celsius, pressure in atmospheres, and mole fractions are unitless.


Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
The VLE calculations use the Raoult's law and Dalton's law for ideal mixtures. y_i = (x_i * P_i^sat) / P
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Full original guide (expanded)

Vapor-Liquid Equilibrium (VLE) Calculator

This calculator is designed for chemical engineers and researchers to calculate the vapor-liquid equilibrium for binary mixtures. It helps in determining the composition of vapor and liquid phases in equilibrium, which is critical for designing separation processes like distillation.

VLE Calculator

Results

Vapor Phase Composition N/A
Liquid Phase Composition N/A

Data Source and Methodology

Tutti i calcoli si basano rigorosamente sulle formule e sui dati forniti da 'Chemical Engineering Design' by Coulson & Richardson, 6th Edition.

The Formula Explained

The VLE calculations use the Raoult's law and Dalton's law for ideal mixtures.

y_i = (x_i * P_i^sat) / P

Glossary of Variables

  • Temperature (°C): The operating temperature.
  • Pressure (atm): The operating pressure.
  • Component 1 Mole Fraction: Initial mole fraction in the liquid phase.
  • Component 2 Mole Fraction: Initial mole fraction in the liquid phase.
  • Vapor Phase Composition: Calculated composition in vapor phase.
  • Liquid Phase Composition: Calculated composition in liquid phase.

Frequently Asked Questions (FAQ)

What is Vapor-Liquid Equilibrium (VLE)?

VLE is the condition when both liquid and vapor phases of a substance are in equilibrium with each other at a given temperature and pressure.

Why is VLE important in chemical engineering?

It is crucial for designing separation processes such as distillation, which relies on differences in vapor pressure to separate components.

What are ideal mixtures?

Ideal mixtures follow Raoult's and Dalton's laws, where interactions between different molecules are similar to those between like molecules.

Can this calculator handle non-ideal mixtures?

This basic calculator is designed for ideal mixtures. Non-ideal mixtures require advanced models like Wilson or NRTL.

What units are used in this calculator?

Temperature is in degrees Celsius, pressure in atmospheres, and mole fractions are unitless.


Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
The VLE calculations use the Raoult's law and Dalton's law for ideal mixtures. y_i = (x_i * P_i^sat) / P
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Vapor-Liquid Equilibrium (VLE) Calculator

This calculator is designed for chemical engineers and researchers to calculate the vapor-liquid equilibrium for binary mixtures. It helps in determining the composition of vapor and liquid phases in equilibrium, which is critical for designing separation processes like distillation.

VLE Calculator

Results

Vapor Phase Composition N/A
Liquid Phase Composition N/A

Data Source and Methodology

Tutti i calcoli si basano rigorosamente sulle formule e sui dati forniti da 'Chemical Engineering Design' by Coulson & Richardson, 6th Edition.

The Formula Explained

The VLE calculations use the Raoult's law and Dalton's law for ideal mixtures.

y_i = (x_i * P_i^sat) / P

Glossary of Variables

  • Temperature (°C): The operating temperature.
  • Pressure (atm): The operating pressure.
  • Component 1 Mole Fraction: Initial mole fraction in the liquid phase.
  • Component 2 Mole Fraction: Initial mole fraction in the liquid phase.
  • Vapor Phase Composition: Calculated composition in vapor phase.
  • Liquid Phase Composition: Calculated composition in liquid phase.

Frequently Asked Questions (FAQ)

What is Vapor-Liquid Equilibrium (VLE)?

VLE is the condition when both liquid and vapor phases of a substance are in equilibrium with each other at a given temperature and pressure.

Why is VLE important in chemical engineering?

It is crucial for designing separation processes such as distillation, which relies on differences in vapor pressure to separate components.

What are ideal mixtures?

Ideal mixtures follow Raoult's and Dalton's laws, where interactions between different molecules are similar to those between like molecules.

Can this calculator handle non-ideal mixtures?

This basic calculator is designed for ideal mixtures. Non-ideal mixtures require advanced models like Wilson or NRTL.

What units are used in this calculator?

Temperature is in degrees Celsius, pressure in atmospheres, and mole fractions are unitless.


Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Formula (extracted text)
The VLE calculations use the Raoult's law and Dalton's law for ideal mixtures. y_i = (x_i * P_i^sat) / P
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
Formulas

(Formulas preserved from original page content, if present.)

Version 0.1.0-draft
Citations

Add authoritative sources relevant to this calculator (standards bodies, manuals, official docs).

Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).