The values in this table are taken almost exclusively from the International Union of Pure and Applied Chemistry “Solubility Data Series.” Unless noted, they comprise evaluated data fitted to a smoothing equation. The data at each temperature are then derived from the smoothing equation which expresses the mole fraction solubility X1 of the gas in solution as:
ln X1 = A + B/T* + C ln T*
where
T* = T/100 K
All values refer to a partial pressure of the gas of 101.325 kPa (one atmosphere).
The equation constants, the standard deviation for ln X1 (except where noted), and the temperature range over which the equation applies are given in the column headed Equation constants. There are two exceptions. The equation for methane has an added term, DT *. The equation for H2Se and H2S takes the form,
ln X1 = A + B/T + C ln T + DT
where T is the temperature in kelvin.
Solubilities given for those gases that react with water, namely ozone, nitrogen oxides, chlorine and its oxides, hydrogen sulfide, hydrogen selenide, and sulfur dioxide, are recorded as bulk solubilities; i.e., all chemical species of the gas and its reaction products with water are included. The solubility of carbon dioxide (CO2) can be found in "Solubility of Carbon Dioxide in Water at Various Temperatures and Pressures" in this section.
T/K | Solubility (X1) | Equation constants | Ref. |
Continued on next page... | |||
Hydrogen (H2) Mr = 2.01588 | |||
288.15 | 1.510 × 10–5 | A = –48.1611 | 1 |
293.15 | 1.455 × 10–5 | B = 55.2845 | 1 |
298.15 | 1.411 × 10–5 | C = 16.8893 | 1 |
301.15 | 1.377 × 10–5 | Std. dev. = ±0.54% | 1 |
308.15 | 1.350 × 10–5 | Temp. range = 273.15—353.15 | 1 |
Deuterium (D2) Mr = 4.0282 | |||
283.15 | 1.675 × 10–5 ± 0.57% | Averaged experimental values | 1 |
288.15 | 1.595 × 10–5 ± 0.57% | 1 | |
293.15 | 1.512 × 10–5 ± 0.78% | Temp. range = 278.15—303.15 | 1 |
298.15 | 1.460 × 10–5 ± 0.52% | 1 | |
303.15 | 1.395 × 10–5 ± 0.37% | 1 | |
Helium (He) Ar = 4.0026 | |||
288.15 | 7.123 × 10–6 | A = –41.4611 | 2 |
293.15 | 7.044 × 10–6 | B = 42.5962 | 2 |
298.15 | 6.997 × 10–6 | C = 14.0094 | 2 |
303.15 | 6.978 × 10–6 | Std. dev. = ±0.54% | 2 |
308.15 | 6.987 × 10–6 | Temp. range = 273.15—348.15 | 2 |
Neon (Ne) Ar = 20.1797 | |||
288.15 | 8.702 × 10–6 | A = –52.8573 | 2 |
293.15 | 8.395 × 10–6 | B = 61.0494 | 2 |
298.15 | 8.152 × 10–6 | C = 18.9157 | 2 |
303.15 | 7.966 × 10–6 | Std. dev. = ±0.47% | 2 |