key term - PKa

Definition

The pKa value is used to express the strength of acids. It's defined as -log10 Ka where Ka is the acid dissociation constant.

Related terms

Strong Acid:

An acid with low pKa value that completely ionizes in solution.

Weak Acid:

An acid with high pKa value that only partially ionizes in solution.

Buffer Solution:

A solution containing both weak acid and its conjugate base (or vice versa) capable of resisting changes in pH upon addition of small amounts of either an acid or base.