Rate of Effusion Calculator
Calculate and compare the relative effusion rates of two gases based on Graham's law.
Calculation Parameters
Adjust the values below.
Calculated Result
Effusion Rate Ratio (A / B)
Expert Tip
Ensure units are correctly formatted (e.g. Kelvin for gas temperatures and liters for volumes) to get chemically accurate outputs.
How this Calculator Works
This calculator allows you to solve Rate of Effusion problems dynamically. Adjust the input parameters using the sliders or selection menu below:
- Molar Mass of Gas A (Ma, g/mol) (Range: 1.0 to 250.0, Default: 4.0)
- Molar Mass of Gas B (Mb, g/mol) (Range: 1.0 to 250.0, Default: 32.0)
The results are computed instantly and updated in the results panel on the right.
Formula & Methodology
Where:
- Molar Mass of Gas A: Parameter value.
- Molar Mass of Gas B: Parameter value.
Step-by-Step Calculation Example
To calculate Rate of Effusion manually, follow these steps:
- Identify the input parameters. For example:
- Molar Mass of Gas A (Ma, g/mol) = 4.0
- Molar Mass of Gas B (Mb, g/mol) = 32.0
- Apply the formula:
Rate_A / Rate_B = √(M_B / M_A)
- Verify the calculated value which is updated instantly in the results panel on the right.
Frequently Asked Questions
What is gas effusion? ▼
Effusion is the process where gas molecules escape through a tiny pinhole aperture into a vacuum without molecular collisions.
How does molar mass influence effusion rate? ▼
Effusion rate is inversely proportional to the square root of gas molar mass (lighter gases effuse faster).
What is the difference between effusion and diffusion? ▼
Effusion is gas passage through a pinhole into a vacuum, whereas diffusion is gas spreading through another fluid via random collisions.