The pH is a measure that is used to determine the acidity or alkalinity of a substance.
Its acronym is for hydrogen potential or hydrogenation potential.
<u>It can be measured through a potentiometer or pH meter</u>, which measures the potential difference between reference electrodes and glass electrodes that are sensitive to hydrogen ion.
It is a very important procedure and widely used in chemistry and biochemistry, since it determines many significant characteristics of the structure and activity of the molecules.
