Acid-base reaction: A chemical reaction involving the transfer of protons from one substance (acid) to another substance (base).
Conjugate acid-base pair: Two species related by donating or accepting a proton. In an acid-base reaction, when one species loses a proton (becomes an acid), another species gains that proton and becomes its conjugate base.
pH:A measure of the acidity or alkalinity of a solution. pH values below 7 indicate acidity, while values above 7 indicate alkalinity.