IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Calcium nitrate and Water

Components:
   (1) Calcium nitrate; Ca(NO3)2; [10124-37-5]  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:
   Yasunishi, A.; Yoshida, F., J. Chem. Eng. Data 1979, 24, 11-14.

Variables:
   Temperature = 298.15 K
   Pressure = 101.325 kPa
   Concentration = c₂/mol L^-1 = 0 - 3.581

Prepared By:
   C.L. Young

Experimental Remarks:

   P = 1 atm = 101.325 kPa = 1.01325 bar

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)


T/K	Ostwald coefficient L	Ostwald Note	Concentration C₂ [mol/L]
298.15	0.8264	a	0
298.15	0.7630	a	0.232
298.15	0.7027	a	0.510
298.15	0.6363	a	0.801
298.15	0.5584	a	1.158
298.15	0.5014	a	1.476
298.15	0.4460	a	1.788
298.15	0.4067	a	2.062
298.15	0.3430	a	2.504
298.15	0.2370	a	3.581

Notes:
   ^a  L = Ostwald coefficient (cm³ cm^-3)

Method/Apparatus/Procedure:
   Volumetric apparatus with multibulb buret and magnetic stirrer. Amount of solution and gas absorbed determined volumetrically. Density and composition of solution determined after absorption. Details in Ref. 1.

Source and Purity of Materials:
   (1) High purity grade sample, purity 99.96 mole %.
   (2,3) Guaranteed reagent, solution degassed by boiling.

Estimated Errors:
   Solubility: δL = ± 1 %
   Temperature: δT/K = ± 0.05

References:
   1. Tokunaga, J., J. Chem. Eng. Data 1975, 20, 41.