Rate of Effusion Calculator

Compare effusion rates with Graham's law.

Rate₁ ÷ Rate₂ 4

Formula: rate₁ ÷ rate₂ = √(M₂ ÷ M₁)

Step-by-step with your numbers:

1. Values used:

2. Molar mass of gas 1 = 2 g/mol

3. Molar mass of gas 2 = 32 g/mol

5. Rate₁ ÷ Rate₂ = 4

Did we solve your problem today?

Graham's law: lighter gases effuse faster than heavier ones.

The math behind it

rate₁ ÷ rate₂ = √(M₂ ÷ M₁). The lighter gas (smaller M) effuses faster.

H₂ vs O₂ → √(32/2) = 4× faster.

Effusion vs diffusion?

Effusion is escape through a tiny hole; the law applies to both rates.