IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Carbon dioxide with Sulfuric acid, Sodium sulfate and Water
Components:
   (1) Sodium sulfate; Na2SO4; [7757-82-6]  NIST Chemistry WebBook for detail
   (2) Sulfuric acid; H2SO4; [7664-93-9]  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:
   Kobe, K.A.; Kenton, F.H., Ind. Eng. Chem., Anal. Ed. 1938, 10, 76-7.

 Variables:
   Temperature = 298.15 K
   Pressure = 101.325 kPa

 Prepared By:
   P.L. Long; H.L. Clever

 Experimental Remarks:
   The solvent is a mixture of
800 g H2O
200 g Na2SO4 (anhydrous)
40 ml H2SO4 (concentrated, c = 18 mol dm-3)

Thus the molality of the solution is
m2/mol kg-1 = 0.90 (H2SO4)
m3/mol kg-1 = 1.76 (Na2SO4)

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

t/°CT/KOstwald coefficient LOstwald Noteαα NoteVolume [cm3]Volume NoteVolume [cm3]Volume Note
25298.150.270d0.247c49.54a13.40b
 Notes:
   a  Solvent volume.
   b  Carbon dioxide volume absorbed.
   c  Bunsen coefficient [cm3 (STP) cm-3 atm-1].
   d  Ostwald coefficient [cm3 cm-3]

 Method/Apparatus/Procedure:
   The apparatus is described in detail in an earlier paper (Ref. 1). The apparatus consists of a gas buret, a pressure compensator, and a 200 cm3 absorption bulb and mercury leveling bulb. The absorption bulb is attached to a shaking mechanism.
The solvent and the gas are placed in the absorption bulb. The bulb is shaken until equilibrium is reached. The remaining gas is returned to the buret. The difference in the final and initial volume is taken as the volume of gas absorbed.

 Source and Purity of Materials:
   (1) Source not given. Purity stated to be 99+ %.
   (2,3) Sources not given. Analytical grade.
   (4) Distilled.

 Estimated Errors:
   Solubility: δα/cm3 = ± 0.005 (authors)

 References:
   1. Kobe, K.A.; Williams, J.S., Ind. Eng. Chem, Anal. Ed. 1935, 7, 37.