Monoprotic acid

An acid can give up one hydrogen ion in solution, or more. A monoprotic acid (or monobasic acid) gives up one hydrogen ion per molecule. We say that for every mole of an acid present, one mole of hydrogen ions is released.

Examples in mineral acids are hydrochloric acid (HCl) and nitric acid (HNO3), etc.

In organic compounds the term mainly indicates carboxylic acids with every molecule containing a carboxyl group, such as formic acid (HCOOH), acetic acid (CH3COOH), benzoic acid (C6H5COOH), etc.

Acids which are not monoprotic are described as polyprotic acids and can give up more than one hydrogen ion per molecule.

Asam monoprotik 一元酸