Compilation - Carbon dioxide with Water (IUPAC SDS Volume 62)
SDS Volume (2768)
Volume 62. Carbon Dioxide in Water and Aqueous Electrolyte Solutions, p None
Original Measurements
Markham, A. E.; Kobe, K. A.; J. Am. Chem. Soc. 1941, 63, 449.
Variables:
Room Temp:
273.35 - 313.15
$\pu{K}$
Pressure:
101.325
$\pu{kPa}$
Prepared by:
Method/Apparatus/Procedure:
The apparatus was a thermostatted all-glass absorption flask provided with stirring. The solubility was calculated from the change in volume of the gas before and after equilibration at constant pressure. The partial pressure was maintained at 760 mmHg once all the corrections including solvent vapor pressure were done.
Source and Purity of Materials:
- From commercial cylinder. 99.8%.
- Freshly distilled and degassed.
Estimated Errors:
Ambient temperature: At 0.2°C
δt/°C = ±0.1% δα = ±0.2%
At 25 and 40°C
δt/°C = ±0.03% δα = ±0.06%
Components:
- Carbon dioxide, $\ce{ CO2 }$; [124-38-9] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
The results in α were obtained from an average of 8, 12, and 5 experiemental points at each temperature, respectively.
| $T$ ($\pu{K}$) | $T$ (°C) | $x_{1}$ | $P$ (mm Hg) | α ($\pu{cm3(g) cm-3(l) atm-1}$) | $P_{\rm{c}}$ ($\pu{bar}$) |
|---|---|---|---|---|---|
| 273.15 | 0.2 | 1.376 x 10-3 | 7.6E+2 | 1.7023 | 1.019 |
| 298.15 | 25 | 6.118 x 10-4 | 7.6E+2 | 0.7565 | 1.045 |
| 313.15 | 40 | 4.152 x 10-4 | 7.6E+2 | 0.5133 | 1.087 |
(a) Calculated by the compiler.
(b) α = Bunsen coefficient [cm3 (STP) cm-3 atm-1].
