base dissociation constant (Kb)

The base dissociation constant (Kb) measures how strongly a base can accept protons (H⁺) when dissolved in water. It indicates the extent to which a base dissociates into its component ions, mainly hydroxide ions (OH⁻). A larger Kb means the base is stronger, because it more readily accepts protons and increases the concentration of OH⁻ in solution. Conversely, a smaller Kb indicates a weaker base. Understanding Kb helps predict the strength of bases and their behavior in chemical reactions involving proton transfer in aqueous environments.