The standard enthalpies of formation of uranium compounds. XV. Strontium uranates

Authors
Cordfunke, EHP Booij, AS Huntelaar, ME
Citation
Ehp. Cordfunke et al., The standard enthalpies of formation of uranium compounds. XV. Strontium uranates, J CHEM THER, 31(10), 1999, pp. 1337-1345
Citations number
14
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF CHEMICAL THERMODYNAMICS
ISSN journal
00219614 → ACNP
Volume
31
Issue
10
Year of publication
1999
Pages
1337 - 1345
Database
ISI
SICI code
0021-9614(199910)31:10<1337:TSEOFO>2.0.ZU;2-4
Abstract
Enthalpies of solution of the uranates of strontium have been measured calo rimetrically in 5.075 mol . dm(-3) HCl(aq), or in (1.00 mol . dm(-3) HCl 0.0470 mol . dm(-3) FeCl3)(aq). The results have been combined with auxilia ry values to derive the standard molar enthalpies at T = 298.15 K. With the results obtained and recalculated values from the literature, the followin g values for Delta(f)H(m)(o)/kJ . mol(-1) have been obtained: Sr3U11O36, -( 15900 +/- 17); Sr2U3O11, -(5236.4 +/- 4.8); beta-SrUO4, -(1985.1 +/- 1.4); Sr5U3O14, -(7265.8 +/- 7.5); Sr2UO5, -(2626.9 =/- 2.0); Sr3UO6, -(3252.4 +/ - 2.1); Sr2UO4.5, -(2488.0 +/- 2.5). (C) 1999 Academic Press.