Graham's Law Calculator

What is Graham's Law?

Graham's Law, formulated by Thomas Graham in 1848, states that the rate of effusion or diffusion of a gas is inversely proportional to the square root of its molar mass. This fundamental principle in physical chemistry explains why lighter gases diffuse more rapidly than heavier ones.

How to Use This Graham's Law Calculator

Our real-time Graham's Law calculator provides instant calculations for gas diffusion and effusion rates. Here's how to make the most of it:

1. Select Gases: Choose from our preset gas library or enter custom gases with their molar masses.
2. Input Parameters: Enter known values for diffusion rates, effusion times, or molar masses.
3. Choose Calculation Type: Select whether you want to calculate rate ratios, time ratios, or molar masses.
4. View Real-Time Results: See instant calculations with visualizations and detailed explanations.
5. Explore Advanced Features: Use the diffusion simulator, save calculations to history, or export your results.

Practical Applications of Graham's Law

• Gas Separation: Used in industrial processes to separate gases based on their molecular weights.
• Leak Detection Lighter gases like helium are used to detect leaks in systems.
• Respiratory Physiology: Explains how gases move in and out of lungs during breathing.
• Environmental Science: Helps understand atmospheric gas mixing and pollution dispersion.
• Chemical Safety: Important for handling and storing gases safely in laboratories.