10.1 Acid-Base Definitions

Arrhenius

The Arrhenius Definition relates to acids and bases as they act in aqueous solutions. An arrhenius acid is a substance that, in water, increases the concentration of ${H^+}$ ions. An arrhenius base is a substance that, in water, increases {[OH^–]}. Now, ${H^+}$ is used interchangeably with hydronium, or ${H_3O^+}$.