Acids Nitrous acid

In an excess of nitric acid, nitrous acid exists essentially as dinitrogen tetroxide which, in anhydrous nitric acid, is almost completely ionised. This is shown by measurements of electrical conductivity, and Raman and infra-red spectroscopy identify the ionic species... [Pg.55]

Phosphorus trichloride Acetic acid, aluminum, chromyl dichloride, dimethylsulfoxide, hydroxylamine, lead dioxide, nitric acid, nitrous acid, organic matter, potassium, sodium water... [Pg.1211]

Nitrtir, n. (-ous) nitride. Cf. Chloriir. Nitrylsaure,/. nitrylic acid (nitrous acid). Niveau, n. level, -flache, /. level surface, -flasche,/. leveling bottle, leveling vessel (as for a gas buret), -rohr, n., -rohre, /. level tube, leveling tube, -stufe, /. (of electrons) energy level. ... [Pg.321]

If a solution of a nitrite is titrated in the ordinary way with potassium permanganate, poor results are obtained, because the nitrite solution has first to be acidified with dilute sulphuric acid. Nitrous acid is liberated, which being volatile and unstable, is partially lost. If, however, a measured volume of standard potassium permanganate solution, acidified with dilute sulphuric acid, is treated with the nitrite solution, added from a burette, until the permanganate is just decolorised, results accurate to 0.5-1 per cent may be obtained. This is due to the fact that nitrous acid does not react instantaneously with the permanganate. This method may be used to determine the purity of commercial potassium nitrite. [Pg.373]

In sulphuric acid, nitrous acid has a catalytic effect since dinitrogen tetroxide reacts with sulphuric acid to give nitronium ions according to equilibrium (39)102. [Pg.43]

Parent acid nitrous acid, HNO, nitric acid, HNO, phosphoric acid, H PO. [Pg.55]

Phosphorus pentafluoride Phosphorus pentasulfide Phosphorus pentoxide Phosphorus, red Phosphorus tribromide Phosphorus bichloride Water or steam Air, alcohols, water Formic acid, HF, inorganic bases, metals, oxidants, water Organic materials Potassium, ruthenium tetroxide, sodium, water Acetic acid, aluminum, chromyl dichloride, dimethylsulfoxide, hydroxylamine, lead dioxide, nitric acid, nitrous acid, organic matter, potassium, sodium water... [Pg.1480]

However there exists no evidence for this. Moreover, investigation of the absorption spectra of nitric acid, nitrous acid and aliphatic nitro compounds indicates that the peroxide structure hypothesis is incorrect, because nitric acid esters behave as compounds having the normal ester structure (II) (Crigee and Schnorrenberg [la], Matsushima [lb]) ... [Pg.1]

Hyponitrous acid. (Nitrohydroxylaminic acid Nitrous acid. ... [Pg.382]

In his work on the nitration kinetics, which has already been referred to, Mar-tinsen [145] found that in the nitration of phenol with nitric acid, nitrous acid, if present, acted as a catalyst on the nitration process. The presence of nitrous acid was necessary for initiating the reaction, further quantities being formed in the reaction of oxidation of phenol with nitric acid, which accompanied the nitration reaction. Thus the reaction of nitrating phenol is an autocatalytic one. [Pg.116]

The first step involves the formation of the weak acid nitrous acid (HN02 or, more helpfully, HONO) from the sodium salt and the strong acid HC1. Nitrous acid is itself protonated and then loss of water creates the reactive electrophile NO+. [Pg.539]

W. Gerhertz, ed., Ullmann s Encyclopedia of Industrial Chemistry , 7thedn., Wiley-VCH, Weinheim, 2003, chapters Ammonia Ammonium Compounds Hydrazoic Acid and Azides Hydrazine Hydroxylamine Nitrates and Nitrites Nitric Acid, Nitrous Acid and Nitrogen Oxides Nitrogen. [Pg.3087]

Michael Thiemann et al. Nitric Acid, Nitrous Acid, and Nitrogen Oxides", in Ullmann s... [Pg.290]

In the presence of acid, nitrous acid decomposes to " NO, the nitrosonium ion. This electrophile then goes on to react with the nucleophilic nitrogen atom of amines to form diazonium salts (RN2 Cr) from 1° amines and A -nitrosamines (R2NN=0) from 2° amines. [Pg.980]

Reaction with nitrous acid Nitrous acid reacts with the amino group of amino acids to form the corresponding hydroxyacids and liberate nitrogen gas. [Pg.147]

While a reactor is working the uranium-235 or plutonium-239 is slowly converted into fission products. The materials are intensely radioactive. Some of them capture thermal neutrons and thus diminish the efficiency of the pile. It is therefore necessary to take out the fuel rods from time to time and remove the fission products. For this purpose they are kept about 100 days to allow the short-lived radioelements to decay and then dissolved in nitric acid. Nitrous acid ensures that all the plutonium is in the Pu form. The reactions, with 11+ written for H3O+ (p. 194), arc... [Pg.24]

Hydrofluoric acid Acetic acid Nitrous acid Carbonic acid Hydrocyanic acid... [Pg.399]

Carbonic acid Nitrous acid Nitric acid... [Pg.621]

Reduction with ferrous ion was the reaction used in the first Purex flow sheets, at Hanford and Savannah River. The specific reductant used was ferrous sulfamate Fe(S03NHj)j, a compound selected because it stabilized ferrous ion against oxidation in a nitric acid-nitrous acid system. The process was satisfactory in all respects except its addition of extraneous, nonvolatile components to the wastes. [Pg.487]

Nitric acid, nitrous acid and hypochlorous acid are examples of monobasic acids HNO3 is essentially fully ionized in aqueous solution (equation 6.13), but HNO2 and HOCl behave as weak acids (equations 6.14 and 6.15). [Pg.167]

Although a systematic method exists for naming oxoacids, many such laboratory reagents are well recognized by their common names (e.g. sulfuric acid, nitric acid, nitrous acid). A problem with many common names is that they often hide structural information and, most importantly, do not indicate the number of ionizable hydrogen atoms. Where large families of acids exist, e.g. the sulfur oxoacids, systematic names are usually more helpful than traditional ones. [Pg.168]

DICHLOROANILINE (95-82-9) C HjCljN Combustible solid (flash point 235°F/113°C Fire Rating 1). Reacts with strong oxidizers, acids, nitrous acid. Incompatible with acid chlorides, acid anhydrides. On small fires, use dry chemical powder (such as Purple-K-Powder), Halon , or CO2 extinguishers. [Pg.324]

DICHLO.ROANILINE (95-82-9) Combustible solid (flash point 330°F/166°C). Reacts with strong oxidizers, acids, nitrous acid. [Pg.397]

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