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IUPAC-NIST Solubility Database
NIST Standard Reference Database 106
Solubility System:
Ethene with Lanthanum Chloride and Water
Components:
(1) Water; H2O; [7732-18-5]
NIST Chemistry WebBook
for detail
(2) Lanthanum Chloride; LaCl3; [10099-58-8]
NIST Chemistry WebBook
for detail
(3) Ethene, (Ethylene); C2H4; [74-85-1]
NIST Chemistry WebBook
for detail
Original Measurements:
Morrison, T.J.; Billett, F., J. Chem. Soc. 1952, 3819-3822.
Variables:
Temperature = 285.75 K to 344.85 K
Pressure = 101.325 (1 atm) kPa
Prepared By:
H.L. Clever
Experimental Remarks:
The salt effect parameters were calculated from two measurements. The solubility of ethene in water, S°, and I the one molal salt solution, S. Only the solubility of the ethene in water, and the value of the salt effect parameter are given in the paper. The solubility values in the salt solution are not given.
The compiler calculated the values of the salt effect parameter using the mole fraction gas solubility ratio.
Note that the first salt effect parameter above uses the author's notation with c in gram equivalents per kg water. The author's c would be better represented as m
2
((1/3) LaCl
3
)/mol kg
–1
= 3 m
2
(LaCl
3
)/mol kg
–1
, that is, it would have been better If the author had expressed the salt effect parameter in terms of moles of LaCl
3
per kg water rather than equivalents of LaCl
3
per kg water.
Experimental Data:
(Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)
t/°C
T/K
Keunen coefficient, S [(l/m2)log(S°/S)]
Mole Fraction (x
1
)
x
1
Note
Remark(s)
12.6
285.75
0.336
0.359
(1/m2) log (x[degree]/x)
0.359 (l/m) log(x<0>/x)
30.0
303.15
0.300
0.323
(1/m2) log (x[degree]/x)
0.323 (l/m) log(x<0>/x)
49.4
322.55
0.315
0.338
(1/m2) log (x[degree]/x)
0.338 (l/m) log(x<0>/x)
71.7
344.85
0.285
0.308
(1/m2) log (x[degree]/x)
0.308 (l/m) log(x<0>/x)
Notes:
1
For the 1-3 electrolyte the compiler changed to m = c/3 for m
2
/mol kg
–1
in the salt effect parameter.
Method/Apparatus/Procedure:
The degassed solvent flows in a thin film down and absorption helix containing the ethene gas plus solvent vapor at a total pressure of one atmosphere. The volume of gas absorbed is measured in an attached buret system
1
.
Source and Purity of Materials:
(1) Ethene. Prepared from ethanol and phosphoric acid.
(2) Lanthanum chloride. "AnalaR" material.
(3) Water. No information given.
Estimated Errors:
Solubility: δ
k
/kg
–1
mol = 0.010
References:
1. Morrison, T.J.; Billett, F., J. Chem. Soc. 1948, 2033.