Abstract
The profile of the band due to the symmetric stretching vibration in the Raman spectrum of aqueous solutions of NaNO3 has been studied as a function of concentration. Analysis based on the Fourier transform indicates that there are at least three principal components in the band. Analysis gives the positions of the three components as 1047.6, 1050.0 and 1052.0 cm–1, with a fourth component appearing at 1070.0 cm–1 in the most concentrated solutions. On the basis of concentration dependence and band shape these components have been assigned to the free aquated nitrate ion (1047.6), the solvent-separated ion pair (1050.0), the contact ion pair (1052.0) and ion aggregates (1070.0). Association quotients K1 and K2 for the two equilibria Na+(aq)+ NO–3(aq) [graphic omitted] Na+· H2O · NO–3(aq) [graphic omitted] Na+· NO–3·(aq) are K1= 2.7 dm3 mol–1(0.5 mol dm–3) and K2= 3.3 (6 mol dm–3).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
