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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Hydrochloric acid and Water
Components:
(1) Hydrochloric acid; HCl; [7647-01-0]
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:
Van Slyke, D. D.; Sendroy, J., Jr.; Hastings, A. B.; Neill, J. M., J. Biol. Chem. 1928, 78, 765-99.
Variables:
Temperature = 311.2 K
Pressure = "atmospheric"
Concentration =
c
2
/mol L
-1
= 0.01 - 0.300
Prepared By:
Pirketta Scharlin
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°C
T/K
Temp Note
Pressure [mmHg]
Pressure Note
Concentration C
2
[mol/L]
Keunen coefficient, S
S Note
α
α Note
Method/Comments
Method Note
38.0
311.2
a
715.1
c
0.01
0.5468
e
0.5452
d
T
b
38.0
311.2
a
700.8
c
-
0.5466
e
0.5450
d
B
b
38.0
311.2
a
712.0
c
-
0.5460
e
0.5444
d
T
b
38.0
311.2
a
721.8
c
-
0.5469
e
0.5453
d
B
b
38.0
311.2
a
723.0
c
-
0.5469
e
0.5453
d
T
b
38.0
311.2
a
719.3
c
-
0.5475
e
0.5459
d
B
b
38.0
311.2
a
-
c
0.01
0.5468*
e
0.5452*
d
-
b
38.0
311.2
a
721.8
c
0.256
0.5427
e
0.5384
d
B
b
38.0
311.2
a
723.7
c
0.300
0.5407
e
0.5364
d
B
b
Notes:
*
Average of six measurements.
a
Calculated by the compiler.
b
B: saturation by bubbling; T: saturation in rotating tonometer.
c
1 mmHg = 133.322 Pa = 1.33322 x 10
-3
bar
d
α = Bunsen coefficient [cm
3
(STP) cm
-3
atm
-1
].
e
S
1
= Kuenen coefficient [cm
3
(STP) g
-1
atm
-1
].
Method/Apparatus/Procedure:
Two procedures were used for saturating solutions with CO
2
:
Saturation by bubbling (B). The solution was placed in the saturating tube, the lower end of which was connected through a wash bottle with a Kipp CO
2
generator. The tube and wash bottle were immersed in a constant temperature bath. CO
2
gas was bubbled through it rapidly for 30 minutes. The wash bottle was replaced by a mercury reservoir and the free gas was driven completely out of the saturating tube by admitting mercury underneath the solution. The CO
2
contents of the solutions were determined in the manometric gas apparatus (Refs 1 and 2).
Saturation in rotating tonometer (T).
The technique used was that described by Austin et al. (Ref. 3).
Both procedures gave identical results with solutions of acids.
Source and Purity of Materials:
(1) From a Kipp CO
2
generator.
(2) Not specified.
(3) Distilled.
Estimated Errors:
Solubility: δα/α = ± 0.005
Temperature: δ
T
/K = ± 0.1
References:
1. Van Slyke, D. D.; Neill, J. M., J. Biol. Chem. 1924, 61, 523.
2. Van Slyke, D. D.; Sendroy, J., Jr., J. Biol. Chem. 1927, 73, 127.
3. Austin, J. H.; Cullen, G.E.; Hastings, A. B.; McLean, F.C.; Peters, J. P.; Van Slyke, D. D., J. Biol. Chem. 1922, 54, 121.