Nitrogen-oxygen compounds nitrate

Several other reactions of nitrogen-oxygen compounds have been studied mechanistically. There is an account of the oxidation of nitrite ion to nitrate ion by hypochlorite in aqueous basic solution (pH 11) and by chlorite in mildly acid aqueous solution (pH 5). The rate laws are similar,... 

In every variant of the Kjeldahl process, the blank value is of decisive importance. In particular, the acids used for the digestion process may contain nitrogen-oxygen compounds such as nitrates or nitrosyl complexes (for example the sulfuric acid). In the normal way in which the blank value is determined - the addition of strong sodium hydroxide solution and steam distillation - these compounds are however not determined. All what is determined are any ammonium impurities that may be present. However, if a reactive metal such as zirconium (and also titanium)... 

When nitrites and nitrates are thermally decomposed, nitrogen, oxygen, and their compounds are produced. A literature survey produces the following list of substances which appear in one or another decomposition 02, N2, NO, N02, N203, N204, N205. Which of these compounds are produced in any specific case depends on the salt, temperature, and experimental conditions. Since reactions between these compounds occur quite readily, thermodynamic functions for them have been listed (Tables 5.1 to 5.8). The matter of reactions between all these compounds is somewhat complicated, because several of them are thermodynamically quite unfavorable and thus do not need to be considered. On that basis the following conclusions can be drawn ... 

Nitration is an electrophilic reaction of the addition of a nitro group to an organic compound with a nitrating agent. The introduction of the nitro group can take place on a carbon atom (C-nitration), oxygen atom (0-nitration), or nitrogen atom (N-nitration) [4, 8]. 

Fig 24.11. Formation of RNOS from nitric oxide. RNOS are shown in blue. The type of damage caused by each RNOS is shown in parentheses. Of all the nitrogen-oxygen-containing compounds shown, only nitrate is relatively nontoxic. 

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