Definition of HNO2. Meaning of HNO2. Synonyms of HNO2

Here you will find one or more explanations in English for the word HNO2. Also in the bottom left of the page several parts of wikipedia pages related to the word HNO2 and, of course, HNO2 synonyms and on the right images related to the word HNO2.

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

- nitrous acid is unstable, rapidly disproportionating to nitric oxides: 2 HNO2 → NO2 + NO + H2O In aqueous solution, the nitrogen dioxide also disproportionates...
- acid nitrous acid: HNO2 ⇌ H+ + NO− 2;      pKa ≈ 3.3 at 18 °C Nitrous acid is also highly unstable, 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...
- 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...
- with nitrous acid: N2H4 + HNO2 → HN3 + 2 H2O With the hydrazinium cation [N2H5]+ this reaction is written as: [N2H5]+ + HNO2 → HN3 + H2O + [H3O]+ Other...
- 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...
- 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...
- water to give both nitrous acid and nitric acid: N2O4 + H2O → HNO2 + HNO3 The coproduct HNO2 upon heating disproportionates to NO and more nitric acid. When...
- nitrous acid: 2 NaNO2 + H2SO4 → 2 HNO2 + Na2SO4 The nitrous acid then, under normal conditions, decomposes: 2 HNO2 → NO2 + NO + H2O The resulting nitrogen...
- reacts with water to give nitric acid and nitrous acid: 2 NO2 + H2O → HNO3 + HNO2 This reaction is one of the steps in the Ostwald process for the industrial...