IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Ferriferrocyanide (colloidal); (Prussian blue) and Water

Components:
   (1) Ferriferrocyanide (colloidal); (Prussian blue); ; [14038-43-8; 12240-15-2]  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:
   Gatterer, A., J. Chem. Soc. (London) 1926, 129, 299-316.

Variables:
   Temperature = 278.12 K to 298.15 K
   Concentration = c₂/mol L^-1 = 0 - 0.896

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	Ostwald coefficient L	Ostwald Note	Concentration C₂ [mol/L]	Concentration Note
4.97	287.12	a	1.446	c	0	b
4.97	287.12	a	1.465	c	0.126	b
4.97	287.12	a	1.472	c	0.178	b
4.97	287.12	a	1.478	c	0.37	b
4.97	287.12	a	1.464	c	0.51	b
9.95	283.10	a	1.453	c	0.896	b
9.95	283.10	a	1.240	c	0	b
9.95	283.10	a	1.258	c	0.126	b
9.95	283.10	a	1.268	c	0.178	b
9.95	283.10	a	1.277	c	0.37	b
9.95	283.10	a	1.264	c	0.51	b
9.95	283.10	a	1.255	c	0.896	b
14.96	288.11	a	1.070	c	0	b
14.96	288.11	a	1.089	c	0.126	b
14.96	288.11	a	1.098	c	0.178	b
14.96	288.11	a	1.106	c	0.37	b
14.96	288.11	a	1.093	c	0.51	b
14.96	288.11	a	1.087	c	0.896	b
19.98	293.13	a	0.936	c	0	b
19.98	293.13	a	0.9549	c	0.126	b
19.98	293.13	a	0.9633	c	0.178	b
19.98	293.13	a	0.9684	c	0.37	b
19.98	293.13	a	0.9613	c	0.51	b
19.98	293.13	a	0.9512	c	0.896	b
25.00	298.15	a	0.826	c	0	b
25.00	298.15	a	0.8443	c	0.126	b
25.00	298.15	a	0.8530	c	0.178	b
25.00	298.15	a	0.8577	c	0.37	b
25.00	298.15	a	0.8505	c	0.51	b
25.00	298.15	a	0.8421	c	0.896	b

Notes:
^a Calculated by the compiler.
^b c₂ means the concentration of entities 1/12 Fe₄[Fe(CN)₆]₃.
c₂ = c{1/12 Fe₄[Fe(CN)₆]₃}; M{1/12 Fe₄[Fe(CN)₆]₃} = 71.603 g mol^-1

Author: "Although it is uncertain whether the colloids in question have definite chemical formula, yet for the sake of clearness the gram-equivalent of Prussian blue was taken as 1/12 Fe₄[Fe(CN)₆]₃ = 71.603."
   ^c  L = Ostwald coefficient [cm³ cm^-3]. The values represented in table are mean values of measurements.

Method/Apparatus/Procedure:
   The method of Ostwald was employed.¹ The solutions were freed from air by boiling in a vacuum and, without contact with air, transferred to the vaccum mixing vessel at 25 °C. The gas was saturated with water vapor at the same temperature. Five measurements were made with a given solution at five different temperatures, the process being repeated after an interval of several hours to check the former result.

Source and Purity of Materials:
   (1) Carefully washed. Purity of CO₂ was confirmed by the value obtained for its solubility in distilled water.
   (2) Prepared by mixing sodium ferrocyanide and ferric chloride, washed, redissolved, concentrated.
   (3) Not specified.

Estimated Errors:
   Solubility: δL/L = ± 0.004 (by author)

References:
   1. Ostwald-Luther, R. Handbuch der Pysicochemischen Mussungen, 3rd ed. 1910, p. 246.