Definition of HNO2. Meaning of HNO2. Synonyms of HNO2

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Definition of HNO2

HNO2
Nitrous Ni"trous, a. [L. nitrosus full of natron: cf. F. nitreux. See Niter.] 1. Of, pertaining to, or containing, niter; of the quality of niter, or resembling it. 2. (Chem.) Of, pertaining to, or designating, any one of those compounds in which nitrogen has a relatively lower valence as contrasted with nitric compounds. Nitrous acid (Chem.), a hypothetical acid of nitrogen HNO2, not known in the free state, but forming a well known series of salts, viz., the nitrites. Nitrous oxide. See Laughing gas.

Meaning of HNO2 from wikipedia

- acid. The acidification is usually conducted at ice temperatures, and the HNO2 is consumed in situ. Free nitrous acid or concentrated solutions are unstable...
- acid nitrous acid: HNO2 ⇌ H+ + NO− 2;      pKa ≈ 3.3 at 18 °C Nitrous acid is also highly volatile, tending to disproportionate: 3 HNO2 (aq) ⇌ H3O+ + NO−...
- treatment with in situ prepared nitrous acid (HNO2; not HNO3). In situ preparation is necessary as HNO2 is unstable and decomposes rapidly in aqueous...
- with nitrous acid: N2H4 + HNO2 → HN3 + 2 H2O With the hydrazinium cation [N2H5]+ this reaction is written as: [N2H5]+ + HNO2 → HN3 + H2O + [H3O]+ Other...
- + HNO3 → O=C(CH2)5 + HNO2 + H2O The cyclohexanone is then nitrosated, setting the stage for the scission of the C-C bond: HNO2 + HNO3 → [NO+]NO3]− +...
- overall reactions are: 2 NO2 + H2O → HNO2 + HNO3 SO2 (aq) + HNO3 → NOHSO4 NOHSO4 + HNO2 → H2SO4 + NO2 + NO SO2 (aq) + 2 HNO2 → H2SO4 + 2 NO Nitric oxide escapes...
- all oxidized atmospheric odd-nitrogen species (e.g. the sum of NOx, HNO3, HNO2, etc.) NOz (or NOz) = NOy − NOx Mixed Oxides of Nitrogen ("MON"): solutions...
- reacts with water to give nitric acid and nitrous acid: 3 NO2 + H2O → HNO3 + HNO2 This reaction is one of the steps in the Ostwald process for the industrial...
- oxygen to form nitrous acid (HNO2). The reaction is thought to proceed via the following stoichiometry: 4 NO + O2 + 2 H2O → 4 HNO2 Nitric oxide reacts with...
- kinetically non-favored. The presence of small amounts of nitrous acid (HNO2) greatly increases the rate of reaction. Although chromium (Cr), iron (Fe)...