| − | [[Compound|Compounds]] that can act as either an [[acid]] or a [[base]], depending on the situation.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> | + | '''Amphiprotic compounds''' are [[compound]]s which can act as either an [[acid]] or a [[base]], depending on the situation.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> An example is the monoprotic form of sulfuric acid, HSO<sub>4</sub><sup><small>-</small></sup>. In highly acidic solutions it can act like a base and gain a hydrogen, becoming H<sub>2</sub>SO<sub>4</sub>; in highly basic solutions it can give up it's last [[proton]] to become SO<sub>4</sub><sup><small>2-</small></sup> |