An oxy-acid is an acid that contains an acidic hydroxyl group, i.e., one whose acidic
hydrogen is bound to oxygen. Oxy-acids include carboxylic
acids and phenols, but are typically
(e.g., sulfuric acid) the hydration
products of acidic (nonmetal) oxides. Acids
such as hydrochloric acid, whose
acidic hydrogen is bound to an element other than oxygen, are termed hydracids.