IUPAC - Henry’s law solubility constant (via x and p) (09025)

Henry’s law solubility constant (via x and p)

defined via liquid-phase amount fraction and partial pressure
symbol:

H_{s}^{x p}

, unit:

{Pa}^{- 1}

https://doi.org/10.1351/goldbook.09025

Amount fraction

x

of a species in the liquid phase divided by the partial pressure

p

of that species in the gas phase under equilibrium conditions at infinite dilution:

H_{s}^{x p} := \underset{x \to 0}{l i m} \frac{x}{p}

Note:
The coherent SI unit for

H_{s}^{x p}

{Pa}^{- 1}

Example:
The Henry solubility (defined via liquid-phase amount fraction and partial pressure) of ozone in water at

T = 298.15 K

H_{s}^{x p} (O_{3}) = 1.8 \times 10^{- 9} {Pa}^{- 1}

See also: Henry’s law solubility constant

Source:
PAC, 2022, 94, 71. (Henry’s law constants (IUPAC Recommendations 2021)) on page 75 [Terms] [Paper]

Citation: 'Henry’s law solubility constant (via x and p)' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.09025 RIS BibTex EndNote

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Henry’s law solubility constant (via x and p)