Henrys Law Constants: chlorine to helium
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) |
|---|---|---|---|---|---|---|---|---|
| chlorine | 0.06283 | 0.6508 | 15.92 | 3,400 | Cl2 | Soluble; hydrolyzes: Cl2 + H2O -> HOCl + HCl; H_cp is total dissolved Cl2 | water | 25 |
| ethane | 0.001925 | 21.24 | 519.5 | 2,400 | C2H6 | More soluble than methane; natural gas component | water | 25 |
| ethylene | 0.00598 | 6.836 | 167.2 | 2,200 | C2H4 | Slightly more soluble than ethane; polymerization feedstock; also known as ethene | water | 25 |
| ethylene_oxide | 8.412 | 0.004862 | 0.1189 | 3,200 | C2H4O | Very soluble; reacts slowly with water; sterilant gas; CAS 75-21-8 | water | 25 |
| helium | 0.000385 | 106.2 | 2,597 | 83 | He | Noble gas; very low solubility; weak temperature dependence | water | 25 |
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