Isopiestic determination of the osmotic and activity coefficients of aqueous mixtures of NaCl and MgCl/sub 2/ at 25/sup 0/C

Journal Article · Thu Jan 01 04:00:00 EST 1987 · J. Chem. Eng. Data; (United States)

DOI:https://doi.org/10.1021/je00047a025· OSTI ID:6227162

Rard, J A; Miller, D G

The osmotic and activity coefficients of aqueous mixtures of NaCl and MgCl/sub 2/ have been determined at 25/sup 0/C by using the isopiestic method. These measurements extend from low concentrations to the crystallization limits of the mixtures. They are critically compared to published isopiestic, direct vapor pressure, and emf data for this system. The data agree well with previous isopiestic data and two sets of emf values, but direct vapor pressure data are significantly discrepant. Osmotic and activity coefficients for NaCl-MgCl/sub 2/ mixtures are fairly reliably represented by both Pitzer's equations and Scatchard's neutral electrolyte equations.

• Research Organization: Univ. of California, Lawrence Livermore National Lab., Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6227162
• Journal Information: J. Chem. Eng. Data; (United States), Journal Name: J. Chem. Eng. Data; (United States) Vol. 32:1; ISSN JCEAA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACTIVATION ENERGY
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
CRYSTALLIZATION
DATA ANALYSIS
DIFFUSION
DISPERSIONS
ELECTROLYTES
ELECTROMOTIVE FORCE
ENERGY
EQUATIONS
HALIDES
HALOGEN COMPOUNDS
MAGNESIUM CHLORIDES
MAGNESIUM COMPOUNDS
MEDIUM TEMPERATURE
MIXTURES
OSMOSIS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SODIUM CHLORIDES
SODIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE