Components:
(1) Carbon dioxide,
CO2; [124-38-9]
NIST WebBook
(2) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
Murray, C. N.; Riley, J. P.; Deep-Sea Res. 1971, 18, 533-41.
Variables:
Ambient temperature: 274.19 - 308.15 K
Pressure: 101.325 kPa
Prepared by:
Method/Apparatus/Procedure:
Equilibrated solutions were prepared by bubbling gas through magnetically stirred water till equilibrium was reached.
The CO2 content was determined by acidifying the solutions and after degassing then, precisely weighing the evolved CO2.
Source and Purity of Materials:
- 99.9%, tested by mass spectrometry.
- Conductivity water, degassed.
Estimated Errors:
Ambient temperature: δT/K = ±0.02 (by authors)
Experimental Values:
| T (K) | T (°C) | x1 | α (cm3(g) cm-3(l) atm-1) | Pc (bar)a |
|---|---|---|---|---|
| 274.19 | 1.04 | 1.331 x 10-3 | 1.6471 | 1.02 |
| 278.15 | 5.0 | 1.148 x 10-3 | 1.4199 | 1.022 |
| 283.15 | 10.0 | 9.645 x 10-4 | 1.1926 | 1.026 |
| 288.15 | 15.0 | 8.174 x 10-4 | 1.01 | 1.03 |
| 293.15 | 20.0 | 7.009 x 10-4 | 8.652 x 10-1 | 1.037 |
| 298.15 | 25.0 | 6.099 x 10-4 | 7.519 x 10-1 | 1.045 |
| 305.15 | 32.0 | 5.150 x 10-4 | 6.336 x 10-1 | 1.061 |
| 308.15 | 35.0 | 4.805 x 10-4 | 5.905 x 10-1 | 1.07 |
(a) Calculated by the compiler.
(b) Bunsen coefficient [cm3 (STP) cm-3 atm-1].
The results are the mean of at least three measurements.
