Components:
(1) Carbon dioxide,
CO2; [124-38-9]
NIST WebBook
(2) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
Takenouchi, S.; Kennedy, G.; Am. J. Sci. 1964, 262, 1055-74.
Variables:
Ambient temperature: 383.15 - 598.15 K
Pressure: 10 - 160 MPa
Prepared by:
Method/Apparatus/Procedure:
The apparatus was a high-pressure autoclave with sampling valves for both phases. No stirring was used. Samples of the dense and the light phases were extracted and analyzed for their CO2 content by titration.
The Henry's constants were obtained by graphical methods from the vapor-liquid equilibrium data.
Source and Purity of Materials:
- Not stated.
- Distilled. Degassed by boiling.
Estimated Errors:
Ambient temperature: δT/K = ±1.5 or larger
Pressure: δP/bar = ±5 (by compiler)
References
1 Krichevsky, I. R.; Kasarnovsky, J. S.; J. Am. Chem. Soc. 1935, 57, 2168-71.
Experimental Values:
| T (K) | T (°C) | H (atm)b | C1 (cm3/mol) | H (atm)b |
|---|---|---|---|---|
| 383.15 | 110.0 | 5010.0 | 28.4 | 5500.0 |
| 423.15 | 150.0 | 5560.0 | 30.0 | 6300.0 |
| 473.15 | 200.0 | 4840.0 | 27.0 | 6000.0 |
| 523.15 | 250.0 | 4170.0 | 4.0 | 5250.0 |
| 548.15 | 275.0 | - | - | 4400.0 |
| 573.15 | 300.0 | - | - | 3800.0 |
| 598.15 | 325.0 | - | - | 2950.0 |
(a) Calculated by the compiler. (b) Henry's constants KH,a and KH,b were calculated by the authors from vapor-liquid equilibria data. KH,a is obtained from KH,b using the Krichevsky and Kasarnovsky equation1 with the partial molar volume. Comparison with reliable partial molar volume data shows those volumes to be too low and unrealistic, especially at high temperatures. The authors state that the Henry's constants are valid to 250°C (523.15 K).
