IUPAC - Henry’s law volatility constant (via p and c) (09023)

Henry’s law volatility constant (via p and c)

defined via partial pressure and amount concentration
symbol:

H_{v}^{p c}

, unit:

Pa m^{3} {mol}^{- 1}

https://doi.org/10.1351/goldbook.09023

Partial pressure

p

of a species in the gas phase divided by the amount concentration

c_{l}

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

H_{v}^{p c} := \underset{c_{l} \to 0}{l i m} \frac{p}{c_{l}}

Note:
The coherent SI unit for

H_{v}^{p c}

Pa m^{3} {mol}^{- 1}

Example:
The Henry volatility of ozone in water at

T = 298.15 K

H_{v}^{p c} (O_{3}) = 1.0 \times 10^{4} Pa m^{3} {mol}^{- 1}

See also: Henry’s law volatility constant

Source:
PAC, 2022, 94, 71. (Henry’s law constants (IUPAC Recommendations 2021)) on page 76 [Terms] [Paper]

Citation: 'Henry’s law volatility constant (via p and c)' 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.09023 RIS BibTex EndNote

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Henry’s law volatility constant (via p and c)