The free energy of formation of CaCsCl sub 3

Journal Article · Mon Jan 01 04:00:00 EST 1990 · High Temperature Science (An International Journal); (United States)

OSTI ID:7273867

Kleinschmidt, P D; Axler, K M ^[1]

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1. Los Alamos National Lab., NM (United States)

The free energy of formation of the compound CaCsCl{sub 3} from CaCl{sub 2} and CsCl has been determined by measuring the sublimation pressure of CsCl(g) over CaCsCl{sub 3}(s) and CsCl(s) using Knudsen effusion mass spectrometry. The free energy change for the reaction CaCl{sub 2}(s) + CsCl(s) = CaCsCl{sub 3}(s) at 298 K is {minus}40.7 {plus minus} 6.4 kJ/mol. The enthalpy change is {minus}33.5 {plus minus} 5.2 kJ/mol, and the entropy change is 23.4 {plus minus} 3.7 J/K/mol. Comparisons are made with determinations of these quantities by other investigators.

• OSTI ID: 7273867
• Journal Information: High Temperature Science (An International Journal); (United States), Journal Name: High Temperature Science (An International Journal); (United States) Vol. 28; ISSN HITSA; ISSN 0018-1536
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CESIUM CHLORIDES
CESIUM COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COMPARATIVE EVALUATIONS
ENERGY
ENTHALPY
ENTROPY
EVALUATION
EVAPORATION
FORMATION FREE ENERGY
FREE ENERGY
HALIDES
HALOGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SUBLIMATION
THERMODYNAMIC PROPERTIES