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Nitrous acid (molecular formula H N O 2) is a weak and monoprotic acid known only in solution, in the gas phase, and in the form of nitrite (NO − 2) salts. [3] It was discovered by Carl Wilhelm Scheele, who called it "phlogisticated acid of niter". Nitrous acid is used to make diazonium salts from amines.
Hyponitrous acid is a chemical compound with formula H 2 N 2 O 2 or HON=NOH. It is an isomer of nitramide, H 2 N−NO 2; and a formal dimer of azanone, HNO.. Hyponitrous acid forms two series of salts, the hyponitrites containing the [ON=NO] 2− anion, and the "acid hyponitrites" containing the [HON=NO] − anion.
Nitrogen acid may refer to: Nitric acid, HNO 3; Nitrous acid, HNO 2; Hyponitrous acid, H 2 N 2 O 2; or the less common nitrogen species: Nitroxyl, HNO; Nitroxylic ...
Nitroxylic acid or hydronitrous acid is an unstable reduced oxonitrogen acid. It has formula H 4 N 2 O 4 containing nitrogen in the +2 oxidation state. [1] It consists of a central pair of bonded nitrogen atoms with four hydroxyl groups around them, giving rise to hydrazine-1,1,2,2-tetrol as an alternate chemical name.
Nitrous acid is also highly unstable, tending to disproportionate: 3 HNO 2 (aq) ⇌ H 3 O + + NO − 3 + 2 NO. This reaction is slow at 0 °C. [2] Addition of acid to a solution of a nitrite in the presence of a reducing agent, such as iron(II), is a way to make nitric oxide (NO) in the laboratory.
Nitroxyl (common name) or azanone (IUPAC name) [2] is the chemical compound HNO. It is well known in the gas phase. [3] [4] Nitroxyl can be formed as a short-lived intermediate in the solution phase. The conjugate base, NO −, nitroxide anion, is the reduced form of nitric oxide (NO) and is isoelectronic with dioxygen. The bond dissociation ...
Nitric acid is an inorganic compound with the formula H N O 3.It is a highly corrosive mineral acid. [6] The compound is colorless, but samples tend to acquire a yellow cast over time due to decomposition into oxides of nitrogen.
Nitrosyl-O-hydroxide (molecular formula H O O N) is an isomer of nitrous acid, which has been experimentally observed in the gas phase. [2]HOON contains the longest oxygen-oxygen bond thus far observed in any known molecule, measured to be 1.9149 angstroms.