IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Ethene with Perchloric acid and Water

Components:
   (1) Ethene; C2H4; [74-85-1]  NIST Chemistry WebBook for detail
   (2) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
   (3) Perchloric acid; HClO4; [7601-90-3]  NIST Chemistry WebBook for detail

Original Measurements:
   Purlee, E.L.; Taft, R.W., J. Amer. Chem. Soc. 1956, 78, 5811-5812.

Variables:
   Temperature = 303.15 K
   Pressure = 101.325 kPa
   Concentration = 0 - 9.36 (M₂/moles/1)

Prepared By:
   W. Hayduk

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


t/°C	T/K	Chemical Name	Mass Fraction (w₁)	Molality m₂ [mol dm^–3]	10³ * Solubility [(1 atm)–1]	Solubility Note	Remark(s)
30.0	303.15	Perchloric acid	0.0	0.0	4.11	Inverse of Henry's Constant	Perchloric acid Conc. In Water
30.0	303.15	Perchloric acid	9.75	1.027	3.97	Inverse of Henry's Constant	Perchloric acid Conc. In Water
30.0	303.15	Perchloric acid	20.80	2.34	3.74	Inverse of Henry's Constant	Perchloric acid Conc. In Water
30.0	303.15	Perchloric acid	32.01	3.90	3.79	Inverse of Henry's Constant	Perchloric acid Conc. In Water
30.0	303.15	Perchloric acid	43.60	5.85	3.24	Inverse of Henry's Constant	Perchloric acid Conc. In Water
30.0	303.15	Perchloric acid	53.73	7.80	2.54	Inverse of Henry's Constant	Perchloric acid Conc. In Water
30.0	303.15	Perchloric acid	60.71	9.36	2.10	Inverse of Henry's Constant	Perchloric acid Conc. In Water

Method/Apparatus/Procedure:
   A 200 cm³ glass flask was connected to a pressure-measuring manometer by means of a horizontally mounted spiral tube. The spiral tube permitted the flask to be shaken with an amplitude of up to 2 cm for equilibration. The solvent (80-125 cm³) was deaerated in the flask. The change in pressure of a known volume of gas was measured from which the solubility was determined. The total volume of the apparatus was initially determined by weighing the apparatus filled with distilled water. The "distribution constant", h, was determined for pressures below 101.325 kPa. Method described in Ref. 1.

Source and Purity of Materials:
   1. Ethene was from Matheson, purity 99.5%.
   2. Perchloric acid was from Baker and was the CP grade.

Estimated Errors:
   Solubility: δh/h = ± 0.02
   Temperature: δT/K = ± 0.01

References:
   1. Levy, J.B.; Taft, R.W.; Aaron, D.; Hammett, L.P., J. Amer. Chem. Soc. 1951, 73, 3792.