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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Ammonium sulfate and Water
Components:
(1) Ammonium sulfate; (NH4)2SO4; [7783-20-2]
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:
Gerecke, J., Diss. Dr. rer. Nat. 1969, Hochsch. "Carl Schorlemmer", Leuna-Merseburg, DDR.
Variables:
Temperature = 288.15 K to 333.15 K
Pressure = 288.15 K to 333.15 K
Concentration =
c
2
/mol dm
-3
= 0 - 2
Prepared By:
D.M. Mason
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°C
T/K
Concentration C
2
[mol/dm
3
]
Keunen coefficient, S
S Note
α
α Note
15
288.15
0
-
b
0.990
a
15
288.15
0.25
0.928
b
0.915
a
15
288.15
0.5
0.850
b
0.825
a
15
288.15
1
0.688
b
0.648
a
15
288.15
2
0.548
b
0.477
a
20
293.15
0
-
b
0.860
a
20
293.15
0.25
0.823
b
0.811
a
20
293.15
0.5
0.761
b
0.738
a
20
293.15
1
0.611
b
0.574
a
20
293.15
2
0.4875
b
0.424
a
25
298.15
0
0.5173
b
0.758
a
25
298.15
0.25
0.7295
b
0.718
a
25
298.15
0.5
0.690
b
0.669
a
25
298.15
1
0.549
b
0.515
a
25
298.15
2
0.431
b
0.374
a
30
303.15
0
-
b
0.671
a
30
303.15
0.25
0.645
b
0.634
a
30
303.15
0.5
0.598
b
0.579
a
30
303.15
1
0.4965
b
0.465
a
30
303.15
2
0.383
b
0.331
a
35
308.15
0
-
b
0.605
a
35
308.15
0.25
0.574
b
0.564
a
35
308.15
0.5
0.533
b
0.516
a
35
308.15
1
0.4375
b
0.409
a
35
308.15
2
0.3425
b
0.296
a
40
313.15
0
-
b
0.546
a
40
313.15
0.25
0.512
b
0.502
a
40
313.15
0.5
0.477
b
0.461
a
40
313.15
1
0.388
b
0.362
a
40
313.15
2
0.3035
b
0.262
a
45
318.15
0
-
b
0.482
a
45
318.15
0.25
0.4575
b
0.448
a
45
318.15
0.5
0.4245
b
0.409
a
45
318.15
1
0.351
b
0.327
a
45
318.15
2
0.2793
b
0.241
a
50
323.15
0
-
b
0.436
a
50
323.15
0.25
0.405
b
0.396
a
50
323.15
0.5
0.383
b
0.368
a
50
323.15
1
0.3215
b
0299
a
50
323.15
2
0.250
b
0.215
a
55
328.15
0
-
b
0.392
a
55
328.15
0.25
0.3645
b
0.356
a
55
328.15
0.5
0.348
b
0334
a
55
328.15
1
0.2927
b
0.272
a
55
328.15
2
0.220
b
0.189
a
60
333.15
0
-
b
0.372
a
60
333.15
0.25
0.331
b
0.323
a
60
333.15
0.5
0.321
b
0.308
a
60
333.15
1
0.273
b
0.252
a
60
333.15
2
0.2043
b
0.175
a
Notes:
a
α = Bunsen coefficient [cm
3
(STP) cm
-3
atm
-1
].
b
S
= Kuenen coefficient [cm
3
(STP) g
-1
(H
2
O) atm
-1
].
Method/Apparatus/Procedure:
The principle of the Ostwald method was used in which a measured volume of gas-free liquid is stirred in the presence of the gas, and its decrease in volume is measured in a burette over mercury. The volume of liquid was measured at the experimental temperature. For calculation of the Kuenen coefficent, the density of the solution was obtained from Landolt-Börnstein extant 1969. The molar concentration of salt in the liquid was standardized at 20°C. These data are analyzed and discussed further in Ref. 1.
Source and Purity of Materials:
(1)VEB Leuna Works; 99.8 vol %; the impurity was mostly water (author).
(2) DDR pro analysis grade by DDR Standard TGL 5021.
(3) Double distilled.
Estimated Errors:
Temperature: Not given.
References:
1. Gerecke, J.; Bittrich, H.J. Wiss. Z. Tech. Hochsch. Chem. "Carl Schorlemmer" Leuna-Merseburg 1971, 13(2), 115-22.