Graham's Law Formula:
From: | To: |
Definition: This calculator determines the effusion rate of one gas compared to another based on their molar masses using Graham's Law.
Purpose: It helps in understanding and predicting how different gases will effuse through small openings, which is important in chemical and industrial processes.
The calculator uses Graham's Law formula:
Where:
Explanation: The rate of effusion is inversely proportional to the square root of the molar mass of the gas.
Details: Graham's Law helps in gas separation processes, understanding diffusion rates, and predicting gas behavior in various conditions.
Tips: Enter the molar masses of both gases (in kg/mol) and the known effusion rate of the second gas. All molar mass values must be > 0.
Q1: What is effusion?
A: Effusion is the process by which gas particles pass through a tiny opening from one container to another.
Q2: Why does molar mass affect effusion rate?
A: Heavier gas molecules move more slowly than lighter ones at the same temperature, so they effuse more slowly.
Q3: What units should I use?
A: Use kg/mol for molar masses and m³/s for effusion rates for consistent SI unit results.
Q4: Can I use this for gas diffusion too?
A: While Graham's Law applies to both effusion and diffusion, diffusion rates are more complex due to molecular collisions.
Q5: What's a typical effusion rate?
A: Effusion rates vary widely depending on conditions, but light gases like hydrogen effuse much faster than heavy gases like xenon.