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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Carbon dioxide with Ammonium chloride, Ammonium sulfate and Water
Components:
(1) Ammonium chloride; NH4Cl; [12125-02-9]
NIST Chemistry WebBook
for detail
(2) Ammonium sulfate; (NH4)2SO4; [7783-20-2]
NIST Chemistry WebBook
for detail
(3) Carbon dioxide; CO2; [124-38-9]
NIST Chemistry WebBook
for detail
(4) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
Original Measurements:
Yasunishi, A.; Tsuji, M.; Sada, E., Adv. Chem. Ser. 1979, 177, 189-203.
Variables:
Temperature = 298.15 K
Pressure = 101.325 kPa
Concentration = (c
2
)/mol dm
-1
= 0 - 2.873
Prepared By:
C.L. Young
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
T/K
Pressure [kPa]
Ostwald coefficient L
Ostwald Note
Concentration C
1
[mol/dm
3
]
Concentration Note
Mole Fraction (x
2
)
x
2
Note
298.15
101.325
0.8264
a
0
(c2 + c3)
0
in mixed salt
298.15
101.325
0.7378
a
0.253
(c2 + c3)
0
in mixed salt
298.15
101.325
0.6572
a
0.519
(c2 + c3)
0
in mixed salt
298.15
101.325
0.5794
a
0.845
(c2 + c3)
0
in mixed salt
298.15
101.325
0.4978
a
1.235
(c2 + c3)
0
in mixed salt
298.15
101.325
0.3952
a
1.836
(c2 + c3)
0
in mixed salt
298.15
101.325
0.3161
a
2.486
(c2 + c3)
0
in mixed salt
298.15
101.325
0.2802
a
2.873
(c2 + c3)
0
in mixed salt
298.15
101.325
0.7505
a
0.282
(c2 + c3)
0.25
in mixed salt
298.15
101.325
0.6785
a
0.573
(c2 + c3)
0.25
in mixed salt
298.15
101.325
0.5961
a
0.998
(c2 + c3)
0.25
in mixed salt
298.15
101.325
0.5322
a
1.396
(c2 + c3)
0.25
in mixed salt
298.15
101.325
0.4580
a
1.946
(c2 + c3)
0.25
in mixed salt
298.15
101.325
0.4015
a
2.433
(c2 + c3)
0.25
in mixed salt
298.15
101.325
0.3687
a
2.806
(c2 + c3)
0.50
in mixed salt
298.15
101.325
0.7568
a
0.333
(c2 + c3)
0.50
in mixed salt
298.15
101.325
0.6997
a
0.658
(c2 + c3)
0.50
in mixed salt
298.15
101.325
0.6460
a
1.021
(c2 + c3)
0.50
in mixed salt
298.15
101.325
0.5959
a
1.330
(c2 + c3)
0.50
in mixed salt
298.15
101.325
0.5223
a
2.014
(c2 + c3)
0.50
in mixed salt
298.15
101.325
0.4578
a
2.673
(c2 + c3)
0.75
in mixed salt
298.15
101.325
0.7905
a
0.254
(c2 + c3)
0.75
in mixed salt
298.15
101.325
0.7451
a
0.601
(c2 + c3)
0.75
in mixed salt
298.15
101.325
0.6978
a
1.018
(c2 + c3)
0.75
in mixed salt
298.15
101.325
0.6594
a
1.414
(c2 + c3)
0.75
in mixed salt
298.15
101.325
0.6133
a
1.985
(c2 + c3)
0.75
in mixed salt
298.15
101.325
0.5800
a
2.400
(c2 + c3)
0.75
in mixed salt
298.15
101.325
0.5524
a
2.861
(c2 + c3)
1.00
in mixed salt
298.15
101.325
0.7658
a
0.375
(c2 + c3)
1.00
in mixed salt
298.15
101.325
0.7704
a
0.811
(c2 + c3)
1.00
in mixed salt
298.15
101.325
0.7460
a
1.147
(c2 + c3)
1.00
in mixed salt
298.15
101.325
0.7328
a
1.508
(c2 + c3)
1.00
in mixed salt
298.15
101.325
0.7102
a
1.973
(c2 + c3)
1.00
in mixed salt
298.15
101.325
0.6915
a
2.338
(c2 + c3)
1.00
in mixed salt
298.15
101.325
0.6721
a
2.816
(c2 + c3)
1.00
in mixed salt
Notes:
a
L
= Ostwald coefficient [cm
3
cm
-3
]
Method/Apparatus/Procedure:
Volumetric apparatus with multibulb buret and magnetic stirrer. Amount of solution and gas absorbed determined volumetrically. Partial pressure determined from total pressure and vapor pressure of solution. The vapor pressure of the mixed salt solution estimated by the method of Robinson and Bower (1) from corresponding data for each component salt solution. Apparatus similar to that described in Ref. 2.
Source and Purity of Materials:
(1) Extra pure grade, purity 99.96 mole %.
(2,3) Reagent grade.
(4) Deionized.
Estimated Errors:
Solubility: δ
L
= ± 1%
Temperature: δ
T
/K = ± 0.05
References:
1. Robinson, R.A.; Bower, V.E., J. Res. Nat. Bur. Stand. 1965, 69A, 365.
2. Tokunaga, J., J. Chem Eng. Data 1975, 20, 41.