Open AccessProperties of aqueous mixtures of pure salts: Thermodynamics of the ternary system water-potassium chloride-barium chloride at 25 °C
Author(s) -
R. A. Robinson,
V. E. Bower
Publication year - 1965
Publication title -
journal of research of the national bureau of standards. section a. physics and chemistry
Language(s) - English
Resource type - Journals
eISSN - 2376-5704
pISSN - 0022-4332
DOI - 10.6028/jres.069a.046
Subject(s) - barium chloride , chemistry , hydrochloric acid , aqueous solution , potassium , inorganic chemistry , ionic strength , barium , chloride , ternary numeral system , sodium , ternary operation , activity coefficient , ionic bonding , ion , organic chemistry , phase (matter) , computer science , programming language
Isopiestic vapor pressure measurements have been made on the system water-potassium chloride-barium chloride. The data have been used to evaluate the activity coefficient of each salt in the presence of the other. Two conditions are considered; in one, the solution is maintained at constant total ionic concentration; in the other, at constant total ionic strength. The excess free energy of mixing is calculated and compared with similar data for the water-hydrochloric acid-barium chloride and water-sodium chloride-barium chloride systems.