Isopiestic Determination of the Osmotic and Activity Coefficients of the {hH2SO4 + (1–h)Al2(SO4)3}(aq) System at T = 298.15 K. 1. Experimental Results at Stoichiometric Ionic Molality Factions h = (0.85777, 0.71534, 0.57337, 0.42985, 0.28593, and 0.14332)

Rard, Joseph A.

doi:10.1007/s10953-018-0746-8

Title: Isopiestic Determination of the Osmotic and Activity Coefficients of the {hH₂SO₄ + (1–h)Al₂(SO₄)₃}(aq) System at T = 298.15 K. 1. Experimental Results at Stoichiometric Ionic Molality Factions h = (0.85777, 0.71534, 0.57337, 0.42985, 0.28593, and 0.14332)

Journal Article · Thu Apr 19 00:00:00 EDT 2018 · Journal of Solution Chemistry

DOI:https://doi.org/10.1007/s10953-018-0746-8· OSTI ID:1477826

Rard, Joseph A. ^[1]

Livermore, CA (United States)

Here, isopiestic vapor-pressure measurements have been made at 166 compositions of the {hH₂SO₄ + (1–h)Al₂(SO₄)₃}(aq) system at the temperature 298.15 K using H₂SO₄(aq) as the isopiestic reference standard, where h is the stoichiometric ionic molality fraction of H₂SO₄ in the mixtures that was calculated by assuming complete dissociation of both solutes. These experiments were performed up to the crystallization limits at values of h = (0.85777, 0.71534, 0.57337, 0.42985, 0.28593, and 0.14332) corresponding approximately to h = (6/7, 5/7, 4/7, 3/7, 2/7 and 1/7); the highest achieved molalities are very slightly above or close to the solubility limits because of the very limited tendency of Al₂(SO₄)₃ to form supersaturated solutions when concentrated isothermally at 298.15 K.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1477826

Report Number(s):: LLNL-JRNL-745333; 900763

Journal Information:: Journal of Solution Chemistry, Vol. 47, Issue 10; ISSN 0095-9782

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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Title: Isopiestic Determination of the Osmotic and Activity Coefficients of the {hH2SO4 + (1–h)Al2(SO4)3}(aq) System at T = 298.15 K. 1. Experimental Results at Stoichiometric Ionic Molality Factions h = (0.85777, 0.71534, 0.57337, 0.42985, 0.28593, and 0.14332)

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Title: Isopiestic Determination of the Osmotic and Activity Coefficients of the {hH₂SO₄ + (1–h)Al₂(SO₄)₃}(aq) System at T = 298.15 K. 1. Experimental Results at Stoichiometric Ionic Molality Factions h = (0.85777, 0.71534, 0.57337, 0.42985, 0.28593, and 0.14332)