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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Water
Components:
(1) Carbon dioxide; CO2; [124-38-9]
NIST Chemistry WebBook
for detail
(2) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Curry, J.; Hazelton, C. L., J. Am. Chem. Soc. 1938, 60, 2271-3.
Variables:
Temperature = 298.15 K
Pressure = 298.15 K
Prepared By:
H.L. Clever
Experimental Remarks:
According to the authors the Ostwald coefficent corresponds to a molality of 0.0337 mol kg
-1
at a CO
2
partial pressure of 101.325 kPa.
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°C
T/K
Temp Note
Pressure [mmHg]
Pressure [mmHg]
Ostwald coefficient L
Ostwald Note
Mole Fraction (x
1
)
x
1
Note
25.00
298.15
a
749.4
722.9
0.816
c
-
b
25.00
298.15
a
754.0
728.2
0.822
c
-
b
25.00
298.15
a
747.5
721.5
0.834
c
-
b
25.00
298.15
a
735.5
709.3
0.813
c
-
b
25.00
298.15
a
-
-
Av. 0.821 ± 0.007
c
6.09
b
Notes:
a
Added by the compiler.
b
The mole fraction solubility was calculated by the compiler for a partial pressure of CO
2
of 101.325 kPa (760 mmHg) using a real gas molar volume of 24.34 dm
3
mol
-1
.
c
L
= Ostwald coefficient.
Method/Apparatus/Procedure:
The apparatus was an Ostwald type using the "dry method" as described by Just (Ref. 1).
The apparatus was of small size because it was to be used to determine the solubility of CO
2
in heavy water. The buret was 10 cm
3
graduated to 0.05 cm
3
. The sample bulb had a volume of 6.811 cm
3
.
The four water samples ranged from 2.2735 to 4.7374 g.
Source and Purity of Materials:
(1) Commercial tank. Analyzed by reaction with KOH and found to be 99.8 % pure.
(2) Distilled. Refluxed to remove dissolved gases.
Estimated Errors:
Solubility: δL/L = ± 0.01
Temperature: δ
T
/K= ± 0.01
References:
1. Just, G., Z. Physik. Chem (Leipzig) 1901, 37, 342.