Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
pKb is a measure of basicity or alkalinity. It's defined as the negative logarithm (base 10) of base dissociation constant (Kb). A lower pKb value indicates a stronger base.
Related terms
Base Dissociation Constant (Kb): This measures how readily a base accepts protons from water molecules when it dissolves.
Hydroxide Ion Concentration [OH-]: Refers to how many hydroxide ions are present in a solution after a base has accepted protons.