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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".
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.
Sodium nitrite is an inorganic compound with the chemical formula Na N O 2. It is a white to slightly yellowish crystalline powder that is very soluble in water and is hygroscopic . From an industrial perspective, it is the most important nitrite salt.
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.
Ammonium nitrite is a chemical compound with the chemical formula [NH 4]NO 2. It is the ammonium salt of nitrous acid. It is composed of ammonium cations [NH 4] + and nitrite anions NO − 2. It is not used in pure isolated form since it is highly unstable and decomposes into water and nitrogen, even at room temperature.
5) the product of nitrite reduction is hydrazoic acid (HN 3), an unstable and explosive compound: HNO 2 + N 2 H + 5 → HN 3 + H 2 O + H 3 O + which can also further react with nitrite: HNO 2 + HN 3 → N 2 O + N 2 + H 2 O. This reaction is unusual in that it involves compounds with nitrogen in four different oxidation states. [2]
Potassium nitrite (distinct from potassium nitrate) is the inorganic compound with the chemical formula K N O 2.It is an ionic salt of potassium ions K + and nitrite ions NO 2 −, which forms a white or slightly yellow, hygroscopic crystalline powder that is soluble in water.
The names "caffeine" and "3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione" both signify the same chemical compound.The systematic name encodes the structure and composition of the caffeine molecule in some detail, and provides an unambiguous reference to this compound, whereas the name "caffeine" simply names it.