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Raman spectral study of the constitution and equilibria of nitric acid and d-nitric acid
Authors:Donald E. Irish  Olga Puzic
Affiliation:(1) Guelph-Waterloo centre for Graduate Work in Chemistry, Department of Chemistry, University of Waterloo, N2L 3G1 Waterloo, Ontario, Canada
Abstract:From relative integrated intensity measurements of the symmetric stretching vibration of nitrate ion in nitric acid solutions (both HNO3/H2O and DNO3/D2O), the mass law concentration quotients, Qcacute were obtained as functions of concentration. By extrapolation the limiting dissociation constants were estimated to be 24.4 and 15 respectively at 25°C. It is shown that this constant refers to a process in which the ion pair H3O+ NO3 is in equilibrium with the dispersed, solvated H3O+ and NO3 ions.
Keywords:Nitric acid  d-nitric acid  acid dissociation constants  hydronium nitrate ion pairing  Raman spectroscopy
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