A Thermodynamic Study of Bromo‐Lanthanum (III) Complexes from EMF Measurements | Zendy

Hsin ShuChing | Zendy; Huang TehShoon | Zendy

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A Thermodynamic Study of Bromo‐Lanthanum (III) Complexes from EMF Measurements

Author(s) -

Hsin ShuChing,

Huang TehShoon

Publication year - 1981

Publication title -

journal of the chinese chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.329

H-Index - 45

eISSN - 2192-6549

pISSN - 0009-4536

DOI - 10.1002/jccs.198100025

Subject(s) - chemistry , molality , lanthanum , ionic bonding , gibbs free energy , emf measurement , mole , ion , stability constants of complexes , chemical stability , thermodynamics , analytical chemistry (journal) , inorganic chemistry , chromatography , organic chemistry , physics , electrode , aqueous solution , electrolyte

The stability constants (for the formation) of LaBr 2+ and LaBr 2 + ions were obtained potentiometrically at various ionic strengths at 20°, 25°, 30°, and 35°. The molal free energy was given by Δ G °=‐2,444.04+2.67 T log T +1.39 T . The thermodynamic quantities for the formation of LaBr 2+ were evaluated as Δ H f ° = −207.9, Δ G f ° = −199.1 kcal mole −1 and S ° = −29.5 cal. deg −1 mole −1 at 25°.

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