IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Lithium sulfate and Water

Components:
   (1) Lithium sulfate; Li2SO4; [10377-48-7]  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:
   Lagarote, L., Bull. Soc. Chim. Fr. 1943, 10, 416-7.

Variables:
   Temperature = 290.15 K
   Concentration = c₂/mol L^-1 = 0 - 2.285

Prepared By:
   Pirketta Scharlin

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


t/°C	T/K	Temp Note	Henry's law constant, K [L/mol]	Henry Constant Note	Concentration C₂ [mol/L]	Keunen coefficient, S [cm³/cm³]	S Note
17	290.15	a	-	c	0	1.02	b
17	290.15	a	0.341	c	0.164	0.896	b
17	290.15	a	0.310	c	0.390	0.774	b
17	290.15	a	0.309	c	0.580	0.675	b
17	290.15	a	0.308	c	1.055	0.484	b
17	290.15	a	0.311	c	1.820	0.272	b
17	290.15	a	0.310	c	2.285	0.200	b

Notes:
^a Calculated by the compiler.
^b S₁ = solubility coefficient of CO₂.
S₁ = (V'₁ - V) / v, where (V'₁ - V) is the volume of CO₂ dissolved at pressure P, and v is the volume of the aqueous Li₂SO₄ solution.

The paper contained no definitive information about the pressure P. The measurements probably were made at atmospheric pressure.
   ^c  k = Sechenov constant, defined by equation lg (S_o/S₁) = kc₂, where S_o and S₁ are the solubility coefficients of CO₂ in pure water and in Li₂SO₄ solution, respectively, and c₂ is the concentration of Li₂SO₄ in the aqueous Li₂SO₄ solution.

Method/Apparatus/Procedure:
   A volume V₁ of carbon dioxide, saturated with water vapor, was introduced into Bunte's burette under atmospheric pressure and at the temperature of 17°C. A volume v of aqueous Li₂SO₄ solution of known concentration was then introduced, and the mixture was stirred until no diminution of volume was observed. When the initial temperature was reached, the volume V was read under the pressure P. The volume V₁ at the partial pressure P₁ of CO₂ was reduced to volume V'₁ at pressure P; (V'₁ = V₁P₁/P).
The solubility coefficient S₁ of CO₂ was calculated from the equation:
S₁= (V'₁ - V)/ v

Source and Purity of Materials:
   Nothing specified.

Estimated Errors:

   Temperature: Nothing specified.