IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Ferrous ammonium sulfate and Water

Components:
   (1) Ferrous ammonium sulfate; (NH4)2SO4 FeSO4·6H2O; [7783-85-9]  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:
   Findlay, A.; Shen, B., J. Chem. Soc. 1912, 101, 1459-68.

Variables:
   Temperature = 298.15 K
   Concentration = 10²_γ2/g cm^-3 = 9.51 - 22.47

Prepared By:
   C.L. Young

Experimental Remarks:

   Solubility in water: Ostwald coefficient L = 0.825 cm³ cm^-3.

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


T/K	Pressure [atm]	Density ρ [g/cm³]	Keunen coefficient, S	S Note	Mole Fraction (x₁)	x₁ Note	10² * γ [g/cm³]	γ Note
298.15	1	1.052	0.641	b	4.94	c	9.51	a
298.15	1	1.057	0.629	b	4.86	c	10.26	a
298.15	1	1.124	0.460	b	3.75	c	22.47	a

Notes:
   ^a  γ = mass concentration of salt
   ^b  S = concentration of gas in liquid phase/concentration of gas in gaseous phase

Solubility was stated to be independent of pressure (over 1-2 atm pressure range); value quoted is the mean.
   ^c  Calculated by the compiler assuming V_m,1 = 24.3 x 10^-3 m³ mol^-1 at 1 atm.

Method/Apparatus/Procedure:
   Gas buret and absorption pipet. Manometer tube was of such length as to allow measurements up to 2 x 10⁵ Pa (about 2 atm).

Source and Purity of Materials:
   (1) Purity 99.95 mole %.
   (2) No details given.
   (3) No details given.

Estimated Errors:
   Solubility: δS = ± 1 % (estimated by compiler)
   Temperature: δT/K = ± 0.1 (estimated by compiler)