IUPAC-NIST Solubility Database
NIST Standard Reference Database 106


Glass Ball as Bullet Solubility System: Carbon dioxide with Copper sulfate and Water

Components:
   (1) Copper sulfate; CuSO4; [7758-98-7]  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:
   Vázquez, G.; Chenlo, F.; Pereira, G.; Peaguda, J., An. Quim. 1994, 90, 324-28.

Variables:
   Temperature = 293.1 K to 313.1 K
   Pressure = 1.013 bar
   Concentration = m2/mol kg-1 = 0.250 - 1.006

Prepared By:
   Pirketta Scharlin

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
  
T/KDensity ρ [kg/m3]Density NoteOstwald coefficient LOstwald NoteConcentration C1 [mol/dm3]Concentration NoteMolality m2 [mol/kg]m2 Noteγ [g/L]γ Note
293.1-b0.746e0.0310d0.250c-a
293.1-b0.646e0.0269d0.502c-a
293.1-b0.567e0.0236d0.753c-a
293.1-b0.494e0.0205d1.006c-a
298.11041b0.672e0.0275d0.250c40a
298.11079b0.580e0.0237d0.502c80a
298.11118b0.510e0.0208d0.753c120a
298.11156b0.443e0.0181d1.006c160a
303.1-b0.600e0.0241d0.250c-a
303.1-b0.508e0.0204d0.502c-a
303.1-b0.456e0.0183d0.753c-a
303.1-b0.403e0.0162d1.006c-a
308.1-b0.529e0.0209d0.250c-a
308.1-b0.450e0.0178d0.502c-a
308.1-b0.397e0.0157d0.753c-a
308.1-b0.352e0.0139d1.006c-a
313.1-b0.478e0.0186d0.250c-a
313.1-b0.405e0.0158d0.502c-a
313.1-b0.364e0.0142d0.753c-a
313.1-b0.332e0.0129d1.006c-a
Notes:
   a  γ2 = mass concentration of CuSO4
   b  p = density of aqueous CuSO4 solution
   c  m2 = molality of CuSO4; calculated by the compiler.
   d  c1 = solubility of CO2
   e  L = Ostwald coefficient [cm3 cm-3]

Method/Apparatus/Procedure:
   The apparatus is a combination of previous designs (Refs 1 and 2). It was modified to achieve a more accurate determination of the volume of the absorbent liquid. The apparatus measures the volume of absorbed gas as the volume of mercury that must be supplied to the system in order to restore the initial pressure.
The raw solubility data obtained are gas/ liquid volume ratios. A detailed description of apparatus, method and procedure is given in Ref. 3.

Source and Purity of Materials:
   (1) Commercial, purity 99.5 mole %.
   (2) Merck. Grade not given.
   (3) Distilled and degassed.

Estimated Errors:
   Solubility: δc1/c1 < ± 1 % [estimated by compiler on the basis of the information in Ref. 3]
   Temperature: δT/K = ± 0.1
   Pressure: δP/bar = ± 0.001

References:
   1. Alvarez, J.R.; Fernandez, A.; Coll, A., Ing. Quim. 1984, 16, 67.
   2. Haimour, N., J. Chem. Eng. Data 1990, 35, 177.
   3. Vazquez, G.; Chenlo, F.; Pereira, G.; peaguda, J., J. Chem. Eng. Data 1994, 39, 639.