Compilation - Carbon dioxide with Water (IUPAC SDS Volume 62)
SDS Volume (2763)
Volume 62. Carbon Dioxide in Water and Aqueous Electrolyte Solutions, p None
Original Measurements
Curry, J.; Hazelton, C. L.; J. Am. Chem. Soc. 1938, 60, 2771.
Variables:
Room Temp:
298.15
$\pu{K}$
Pressure:
94.57 - 97.09
$\pu{kPa}$
Prepared by:
Method/Apparatus/Procedure:
The apparatus was an Ostwald type using the 'dry method' as described by Just [1].
The apparatus was of small size because it was to be used to determine the solubility of $\ce{CO2}$ in heavy water. The buret was 10 mL graduated to 0.05 mL. The sample bulb had a volume of 6.811 mL.
The four water samples ranged from 2.2735 to 4.7374 g.
Source and Purity of Materials:
- Commercial tank. Analyzed by reaction with$\ce{KOH}$ and found to be 99.8% pure.
- Distilled. Refluxed to remove dissolved gases.
Estimated Errors:
Ambient temperature: δT/K = ±0.01
Mass concentration (m/v) (1): δL/L = ±0.01
References
Components:
- Carbon dioxide, $\ce{ CO2 }$; [124-38-9] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
According to the authors the Ostwald coefficent corresponds to a molality of 0.0337 mol kg-1 at a CO2 partial pressure of 101.325 kPa.
| $T$ ($\pu{K}$) | $T$ (°C) | $x_{1}$ | $P$ (mm Hg) | $L$ |
|---|---|---|---|---|
| 298.15 | 25.00 | - | 749.4 | 0.816 |
| 298.15 | 25.00 | - | 754.0 | 0.822 |
| 298.15 | 25.00 | - | 747.5 | 0.834 |
| 298.15 | 25.00 | - | 735.5 | 0.813 |
| 298.15 | 25.00 | 6.09 x 10-4 | - | (average) |
(a) Added by the compiler.
(b) The mole fraction solubility was calculated by the compiler for a partial pressure of CO2 of 101.325 kPa (760 mmHg) using a real gas molar volume of 24.34 dm3 mol-1.
(c) L = Ostwald coefficient.
