Henrys Law Constants: nitric_oxide to sulfur_dioxide
Henry's Law constants for gas solubility in water — solubility form H_cp [mol/L/atm], volatility form H_kH [atm·L/mol], dimensionless form H_cc, and van't Hoff temperature-dependence parameter d(lnH)/d(1/T) [K]; covers 20 gases at 25°C reference in water; per Sander (2023) Atmos. Chem. Phys. compilation
| gas | H cp mol per L atm (mol/L/atm) | H dimensionless (dimensionless) | H kH atm L per mol (atm·L/mol) | dln H d 1 T K (K) | formula | notes | solvent | temperature C (C) |
|---|---|---|---|---|---|---|---|---|
| nitric_oxide | 0.001925 | 21.24 | 519.5 | 1,600 | NO | Sparingly soluble; reacts to form HNO2/HNO3 in presence of O2 | water | 25 |
| nitrogen | 0.000648 | 63.05 | 1,542 | 1,300 | N2 | Very sparingly soluble; Henry's law strictly valid only below ~50 bar | water | 25 |
| nitrogen_dioxide | 0.01216 | 3.362 | 82.24 | 2,400 | NO2 | Moderately soluble; disproportionates in water to HNO2 + HNO3; apparent solubility higher | water | 25 |
| oxygen | 0.001317 | 31.04 | 759.6 | 1,500 | O2 | Slightly soluble; used in DO calculations; H_dimensionless = c_gas/c_liquid > 1 for sparingly soluble gas | water | 25 |
| sulfur_dioxide | 1.317 | 0.03105 | 0.7596 | 2,900 | SO2 | Highly soluble; reacts to form H2SO3; undissociated form; strongly prefers liquid | water | 25 |
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