Jabarkan [X-][HZ] / [HX][Z-]=KX dari Réaksi asam-basa dalam bahasa sunda

[X-][HY] / [HX][Y-] = KX / KY

Given that this last quantity is the equilibrium constant for the above réaction, the réaction will tend to the right if KX / KY > 1, in other words if HX is a stronger acid than HY under this definition, and vice versa.

Acids and bases in the Brønsted-Lowry system occur in conjugate pairs; in the réaction

HX → H+ + X-

HX is called the conjugate acid of the base X-, and X- is called the conjugate base of the acid HX.

Some compounds, like water, can act either as an acid or a base, and are called amphoteric compounds.

Stronger acids typically oxidize metals, forming salts and reléasing hydrogen.

See pH for a méasure of proton concentration frequently used for méasuring acidity and alkalinity using this definition. For a list of conjugate acid-base pairs, see conjugate acid.