Arrhenius bases

Arrhenius bases are substances that increase the number of hydroxide ions (OH⁻) when dissolved in water. This increase makes the solution more alkaline or basic. For example, substances like sodium hydroxide (NaOH) release OH⁻ ions into water, which can neutralize acids. The Arrhenius definition focuses on the behavior in aqueous solutions, emphasizing that bases produce hydroxide ions, leading to increased pH and decreased acidity.