basic

Graham's Law of Effusion Rate Calculator

r1/r2 = √(M2/M1) — lighter gases effuse faster.

Compares effusion (or diffusion) rates of two gases at the same temperature using Graham's Law and their molar masses.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

r1/r2 = √(M2/M1)

In depth

Compares effusion (or diffusion) rates of two gases at the same temperature using Graham's Law and their molar masses.