Is Ca(OH)2 an Arrhenius acid or arthritis base?

Ca(OH)₂, or calcium hydroxide, is classified as an Arrhenius base. According to the Arrhenius definition, a base is a substance that increases the concentration of hydroxide ions (OH⁻) in solution. When dissolved in water, Ca(OH)₂ dissociates to produce Ca²⁺ ions and OH⁻ ions, thereby acting as a base.