Home
Introduction
Search Menu
IUPAC Series (PDF)
Reference
Version History
About the Project
Disclaimer
Contact Us
Acknowledgements
IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Potassium chloride and Water
Components:
(1) Potassium chloride; KC1; [7447-40-7]
NIST Chemistry WebBook
for detail
(2) Carbon dioxide; CO2; [124-38-9]
NIST Chemistry WebBook
for detail
(3) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
He, S.; Morse, J.W., Geochim. Cosmochim. Acta 1993, 57, 3533-54.
Variables:
Temperature = 273.15 K-363.15 K
Pressure = 0.1032 MPa
Concentration =
m
2
/mol kg
-1
= 0.1 - 5.0
Prepared By:
Pirketta Scharlin
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
T/K
Temp Note
10
2
* Pressure [atm]
Pressure Note
Density ρ [g/cm
3
]
Density Note
10
3
* Molality m
1
[mol/kg]
m
1
Note
Molality m
2
[mol/kg]
m
2
Note
γ
γ Note
273.15
a
96.6
d
1.0059
c
71.3
e
0.1
b
1.06
f
273.15
a
96.6
d
1.0248
c
69.1
e
0.505
b
1.09
f
273.15
a
96.6
d
1.0473
c
62.9
e
1.008
b
1.20
f
273.15
a
96.6
d
1.0896
c
57.5
e
2.015
b
1.32
f
273.15
a
96.6
d
1.1275
c
53.4
e
3.004
b
1.41
f
273.15
a
96.6
d
1.1443
c
52.5
e
3.508
b
1.44
f
298.15
a
94.2
d
1.0027
c
30.8
e
0.1
b
1.05
f
298.15
a
94.2
d
1.0417
c
29.1
e
1.0
b
1.10
f
298.15
a
94.2
d
1.0820
c
24.5
e
2.0
b
1.31
f
298.15
a
94.2
d
1.1528
c
22.3
e
4.0
b
1.43
f
323.15
a
85.4
d
1.0015
c
16.1
e
0.106
b
1.03
f
323.15
a
85.4
d
1.0328
c
15.3
e
1.001
b
1.09
f
323.15
a
85.4
d
1.0672
c
14.5
e
1.999
b
1.15
f
323.15
a
85.4
d
1.1026
c
13.3
e
2.994
b
1.25
f
323.15
a
85.4
d
1.1377
c
12.8
e
3.997
b
1.30
f
323.15
a
85.4
d
1.1727
c
12.3
e
4.998
b
1.35
f
348.15
a
60.3
d
0.9804
c
7.9
e
0.1
b
1.02
f
348.15
a
60.3
d
10179
c
7.5
e
1.0
b
1.08
f
348.15
a
60.3
d
1.0570
c
7.2
e
2.0
b
1.12
f
348.15
a
60.3
d
1.0932
c
6.8
e
3.0
b
1.18
f
348.15
a
60.3
d
1.1567
c
6.5
e
5.0
b
1.24
f
363.15
a
30.1
d
0.9708
c
3.4
e
0.1
b
1.01
f
363.15
a
30.1
d
1.0087
c
3.3
e
1.0
b
1.04
f
363.15
a
30.1
d
1.0478
c
3.2
e
2.0
b
1.09
f
363.15
a
30.1
d
1.0841
c
3.1
e
3.0
b
1.12
f
363.15
a
30.1
d
1.1476
c
2.8
e
5.0
b
1.20
f
Notes:
a
Calculated by compiler
b
m
2
= molality of KCl
c
p
= density of solvent
d
p
1
= partial pressure of CO
2
e
m
1
= molality of CO
2
f
γ
1
= activity coefficient of CO
2
Method/Apparatus/Procedure:
Either pure CO
2
gas or CO
2
-N
2
mixtures were used in the experiments to maintain a constant P(CO
2
). The CO
2
-N
2
mixtures were made by pumping predetermined amounts of CO
2
and N
2
into a gas tank and their composition was verified by gas chromatography.
CO
2
or CO
2
-N
2
gas mixtures were equilibrated with the aqueous solutions in a series of stirred water-jacketed reaction vessels with condensers. The gas was premoistured by first passing it through distilled water at the temperature of experiment. Fine bubbles were obtained by using gas-dispersion tubes. The bubbling rate was 90- 95 mL min
-1
.
The mole fraction of CO
2
in the CO
2
-N
2
mixture was determined using a Hewlett Packard (5790A) gas chromatograph.
Source and Purity of Materials:
(1) Commercial; purity 99.9 %
(2) Source not mentioned. Analytical reagent-grade which met ACS specifications.
Vacuum-dried before use.
(3) 18 MΩ water obtained from a Milli-Q Super-Q water system.
Estimated Errors:
Solubility: δ
m
1
/m
1
= ± 0.012
δγ
1
/γ
1
= ± 0.04
Temperature: δ
T
/K = ± 0.1