Raoult's Law Calculator
This calculator helps you determine the vapor pressure of a solution using Raoult's Law. Ideal for students and professionals in the field of chemistry.
Calculator
Data Source and Methodology
All calculations are based on standard chemistry formulas and principles. For details, refer to authoritative textbooks and scientific publications.
The Formula Explained
Raoult's Law can be expressed as:
P = P0 × X
Glossary of Variables
- P0: Vapor pressure of the pure component.
- X: Mole fraction of the component in the solution.
- P: Resulting vapor pressure of the solution.
How It Works: A Step-by-Step Example
For a solution with a pure component vapor pressure of 42.2 kPa and a mole fraction of 0.5, the vapor pressure is calculated as follows:
P = 42.2 × 0.5 = 21.1 kPa
Frequently Asked Questions (FAQ)
What is Raoult's Law?
Raoult's Law states that the partial vapor pressure of each component in a solution is equal to the vapor pressure of the pure component multiplied by its mole fraction in the solution.
How do I calculate mole fraction?
The mole fraction is calculated by dividing the moles of the component by the total moles of all components in the solution.
Can Raoult's Law be used for all solutions?
Raoult's Law is ideally applicable to ideal solutions. Deviations can occur in non-ideal solutions.
Formula (LaTeX) + variables + units
','
- No variables provided in audit spec.
- NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures - FTC — Consumer advice — consumer.ftc.gov · Accessed 2026-01-19
https://consumer.ftc.gov/
Last code update: 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.