Barium hydroxide, represented as Ba(OH)2, is classified as a strong base.
When dissolved in water, Ba(OH)2 dissociates completely into barium ions (Ba2+) and hydroxide ions (OH–). This complete dissociation in solution is characteristic of strong bases, which means they increase the concentration of hydroxide ions in the solution significantly. As a result, Ba(OH)2 can effectively neutralize acids and raise the pH of a solution.
In terms of strength, strong bases like barium hydroxide are typically formed from the hydroxides of alkali or alkaline earth metals. The presence of barium, which is an alkaline earth metal, further supports the classification of Ba(OH)2 as a strong base.