IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Lithium sulfate and Water

Components:
   (1) Lithium sulfate; Li2SO4; [10377-48-7]  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:
   Gerecke, J., Diss. Dr. rer. Nat. 1969, Hochsch. "Carl Schorlemmer", Leuna-Merseburg, DDR.

Variables:
   Temperature = 288.15 K to 333.15 K
   Pressure = 101.325 kPa
   Concentration = c₂/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 C₂ [mol/dm³]	Keunen coefficient, S	S Note	α	α Note
15	288.15	0	-	b	0.990	a
15	288.15	0.25	0.8155	b	0.811	a
15	288.15	0.5	0.7115	b	0.704	a
15	288.15	1	0.5325	b	0.520	a
15	288.15	2	0.299	b	0.284	a
20	293.15	0	-	b	0.860	a
20	293.15	0.25	0.6955	b	0.691	a
20	293.15	0.5	0.605	b	0.598	a
20	293.15	1	0.448	b	0.437	a
20	293.15	2	0.250	b	0.237	a
25	298.15	0	-	b	0.758	a
25	298.15	0.25	0.5983	b	0.594	a
25	298.15	0.5	0.525	b	0.519	a
25	298.15	1	0.371	b	0.361	a
25	298.15	2	0.2142	b	0.203	a
30	303.15	0	-	b	0.670	a
30	303.15	0.25	0.523	b	0.518	a
30	303.15	0.5	0.452	b	0.446	a
30	303.15	1	0.3105	b	0.302	a
30	303.15	2	0.191	b	0.181	a
35	308.15	0	-	b	0.605	a
35	308.15	0.25	0.4550	b	0.450	a
35	308.15	0.5	0.391	b	0.385	a
35	308.15	1	0.268	b	0.261	a
35	308.15	2	0.169	b	0.160	a
40	313.15	0	-	b	0.546	a
40	313.15	0.25	0.3953	b	0.391	a
40	313.15	0.5	0.344	b	0.338	a
40	313.15	1	0.2395	b	0.233	a
40	313.15	2	0.1485	b	0.140	a
45	318.15	0	-	b	0.482	a
45	318.15	0.5	0.3035	b	0.298	a
45	318.15	1	0.2133	b	0.207	a
45	318.15	2	0.1338	b	0.126	a
50	323.15	0	-	b	0.436	a
50	323.15	0.5	0.271	b	0.266	a
50	323.15	1	0.192	b	0.186	a
50	323.15	2	0.1195	b	0.113	a
55	328.15	0	-	b	0.392	a
55	328.15	0.5	0.239	b	0.234	a
55	328.15	1	0.176	b	0.106	a
55	328.15	2	0.113	b	0.106	a
60	333.15	0	-	b	0.372	a
60	333.15	0.5	0.2125	b	0.208	a
60	333.15	1	0.156	b	0.151	a
60	333.15	2	0.105	b	0.0987	a

Notes:
   ^a  α = Bunsen coefficient [cm³ (STP) cm^-3 atm^-1].
   ^b  S = Kuenen coefficient [cm³ (STP) g^-1(H₂O) 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 coefficient, 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.