Author:
Bayliss NS,Dingle R,Watts DW,Wilkie RJ
Abstract
The spectra of solutions of sodium nitrite
in aqueous solutions of sulphuric and perchloric acids have been measured at a
number of temperatures, and from these spectra the concentrations of the
species HNO2 and NO+ have been calculated over the acid-concentration
ranges 0-100% sulphuric acid (by wt.) and 0-72% perchloric acid (by wt.). The
changes due to temperature were found to be less than the experimental error in
the determination of the concentrations of nitrous acid and nitrosonium ion.
The equilibria of importance in such
systems are discussed and equilibrium constants have been calculated for the
reactions
H2SO4
+ HNO2 <=> H2O + NO+ + HSO4-
and
HClO4 + HNO2 H2O + NO+ + ClO4-
Attempts have been made to
correlate the determined values for the concentration of nitrous acid and
nitrosonium ion with the acidity functions J0,
C0, and Hr for both solvent systems.
The nitroacidium ion (H2NO2+)
in these systems is found to be less important than previously thought.'
Cited by
69 articles.
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