IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ethene with Carbonic acid, monopotassium salt, (Potassium bicarbonate), Carbonic acid, dipotassium salt, (Potassium carbonate) and Water

Components:
   (1) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (2) Ethene, (Ethylene); C2H4; [74-85-1]  NIST Chemistry WebBook for detail
   (3) Carbonic acid, monopotassium salt, (Potassium bicarbonate); KHCO3; [298-14-6]  NIST Chemistry WebBook for detail
   (4) Carbonic acid, dipotassium salt, (Potassium carbonate); K2CO3; [584-08-7]  NIST Chemistry WebBook for detail

Original Measurements:
   Onda, K.; Sada, E.; Kobayashi, T.; Kito, S.; Ito, K., J. Chem. Eng. Jpn. 1970, 3, 137-142.

Variables:
   Temperature = 298.15 K
   Pressure = 101.3 kPa

Prepared By:
   C.L. Young

Experimental Remarks:

   Pressure = 1 atmosphere = 1.01325 x 10⁵ Pa.

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


T/K	Concentration C₁ [mol L^–1]	Concentration Note	Concentration C₂ [mol L^–1]	Concentration Note	α [α]	α Note	Ionic Strength [mol L^–1]	Ionic Note
298.15	0.239	+ potasssium bicarbonate	0.016	+ potassium carbonate	0.0983	*	0.286	*
298.15	0.538	+ potasssium bicarbonate	0.036	+ potassium carbonate	0.0805	*	0.645	*
298.15	0.587	+ potasssium bicarbonate	0.039	+ potassium carbonate	0.0848	*	0.704	*
298.15	0.873	+ potasssium bicarbonate	0.058	+ potassium carbonate	0.0709	*	1.046	*
298.15	1.084	+ potasssium bicarbonate	0.072	+ potassium carbonate	0.0627	*	1.299	*

Notes:
   ^*  quoted in original paper.
   ⁺  calculated from ionic strength and ratio of ionic strengths due to the two salts given in paper.

Method/Apparatus/Procedure:
   Concentrated solution prepared by weighing, less Concentrated solution prepared by weighing, less concentrated solutions prepared by subsequent dilution. Equilibrium established between a measured volume of gas and a measured amount of gas-free liquid in a cell fitted with a magnetic stirrer. Amount of gas absorbed estimated from change in volume of gas. Details in source and Ref. 1.

Source and Purity of Materials:
   1. Commercial sample, purity 99.6 mole per cent.
   2. Analytical grade sample.
   3. Analytical grade sample.
   4. No information given.

Estimated Errors:
   Solubility: δα = ± 0.2%. (estimated by compiler)
   Temperature: δT/K = ± 0.2 (estimated by compiler)

References:
   1. Onda, K.; Sada, E.; Kobayashi, T.; Kito, S.; Ito, Y., J. Chem. Eng. Jpn. 1970, 3, 18.