How does the Henry's Law work?

C = P / kH (where kH is Henry's law constant, units L·atm/mol) Then: Or: P = kH × C Then: Temperature-dependent: gases become less soluble at higher temperatures Then: kH for O₂ ≈ 769 L·atm/mol · kH for CO₂ ≈ 29.4 L·atm/mol.

Can you give an example of how to use the Henry's Law?

Example: Input CO₂ at 1 atm · kH=29.4 L·atm/mol gives a result of C = 1/29.4 = 0.034 mol/L (Dissolved CO₂ in carbonated drinks).

Is the Henry's Law free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Henry's Law?

Our Henry's Law uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Henry's Law

⚗️Henry's Law Calculator (C=P/kH)

kH (L·atm/mol)

O2≈769, CO2≈29

Partial pressure (atm)

Henry's Law states that at constant temperature, the concentration of a dissolved gas in a liquid is directly proportional to the partial pressure of that gas above the liquid. C = P / kH.

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Did You Know?

Henry's Law explains why opening a carbonated drink releases CO₂ — the reduced pressure above the liquid means less CO₂ can remain dissolved. Temperature matters too: warm fizzy drinks go flat faster.

References

›Henry's law — Wikipedia

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Henry's Law

⚗️Henry's Law Calculator (C=P/kH)

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