Nitrogen acid

Nitrogen acid may refer to:


 * Nitric acid, HNO3
 * Nitrous acid, HNO2
 * Hyponitrous acid, H2N2O2

or the less common nitrogen species:


 * Nitroxyl, HNO
 * Nitroxylic acid, H4N2O4
 * Peroxynitrous acid, HOONO
 * Peroxynitric acid, HOONO2