Beiträge zur Kenntnis der Verbindungen des Galliums und Indiums. VII. Die Bildungswärmen der Galliumtrihalogenide

Klemm, Wilhelm; Jacobi, Helmut

doi:10.1002/zaac.19322070209

Cited by 26 publications

(1 citation statement)

References 3 publications

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“…The temperature coefficient of the potential was −0.566 mV K –1 , which gives S ○̵ (Ga 3+ , aq) = −319 J K –1 mol –1 . A second value can be obtained from data on gallium trichloride. Klemm and Jacobi found Δ H f ○̵ (GaCl 3 , s) = −523 ± 4 kJ mol –1 . Recent studies of the thermodynamics of gallium(III) in chloride media have encountered difficulties that, as stability constants suggest, can be partly attributed to both hydrolysis and, at moderate chloride concentrations, chloride complexing.…”

Section: Manganese(ii)mentioning

confidence: 99%

Improvements in Estimated Entropies and Related Thermodynamic Data for Aqueous Metal Ions

Johnson

Nelson

2012

Inorg. Chem.

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New estimated standard entropies for some aqueous metal ions are obtained by taking account of magnetic and symmetry contributions. By combining them with an analysis of literature data, improved experimental and estimated values are derived for the standard enthalpies and Gibbs energies of formation of the aqueous ions of titanium, vanadium, chromium, manganese, cerium, and praseodymium. Separate entropy correlations are used for each primary coordination number, and the size dependence is represented by the reciprocal of the metal-oxygen distance in that coordination. The new scheme is consistent with recent work on the coordination of Hg(2+)(aq), Pb(2+)(aq), and tripositive rare earth ions. It differs from its predecessors in indicating a larger variation of the standard molar entropies of aqueous ions with coordination number. The value of S(Θ)(Be(2+), aq) is discussed in this context.

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Section: Manganese(ii)mentioning

confidence: 99%