Journal
DALTON TRANSACTIONS
Volume 39, Issue 42, Pages 10148-10153Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0dt00343c
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Funding
- Agence Nationale pour la Recherche ANR AMPLI [ANR-07-BLAN-0295-01]
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This work is aimed at a description of the thermodynamic properties of highly concentrated aqueous solutions of nitric acid salts at 25 degrees C within the binding mean spherical approximation (BIMSA) theory. The predictive capability of this model was examined. First, Raman spectroscopy was used to study the proportion of associated nitric acid as a function of concentration. The corresponding apparent association constant values were compared with literature values. Besides, the BIMSA model, taking into account complex formation, was used to represent literature experimental osmotic coefficient variation with concentration. This theoretical description led to an assessment of the degree of association. The so calculated amount of associated nitric acid coincides accurately with our Raman experimental results up to a high concentration of acid.
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