Ionization Constant

Definition

The ionization constant, or acid dissociation constant (Ka), measures the strength of an acid in solution. It is the equilibrium constant for the chemical reaction known as dissociation in the context of acid-base reactions.

Related terms

pH Scale:

A measure used by scientists to define levels of acidity or alkalinity, based on the hydrogen ion concentration in solutions.

Acidic Solution:

A solution with a pH less than 7; it has more hydrogen ions than hydroxide ions.

Basic Solution/Alkaline Solution: A solution with a pH greater than 7; it has more hydroxide ions than hydrogen ions.