Graham's Law Calculator

Calculate diffusion and effusion rates using Graham's Law: Rate₁/Rate₂ = √(M₂/M₁)

Find *

Significant Figures

Rate of Gas 1 (Rate₁) *

Rate of diffusion/effusion

Rate of Gas 2 (Rate₂) *

Rate of diffusion/effusion

Molar Mass of Gas 1 (M₁) *

Molar mass in g/mol

Molar Mass of Gas 2 (M₂) *

Molar mass in g/mol

Show Steps

Show Visualization

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Graham's Law Result

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Rate vs Molar Mass

Visual representation of Graham's Law

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Step-by-step Graham's Law calculation

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Rate Ratio

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Rate₁/Rate₂

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Mass Ratio

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√(M₂/M₁)

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Heavier Gas

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Slower rate

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Lighter Gas

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Faster rate

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Key formulas and relationships

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Understanding Graham's Law

📊 Chemical Disclaimer: Graham's Law applies to ideal gases at constant temperature and pressure. Real gases may show slight deviations.