pH stands for the potential of hydrogen. It is known as the negative logarithm of the H+ ion concentration. Consequently, the meaning of the title pH is clarified as the quality of hydrogen. pH describes the concentration of hydrogen ions in a solution and is a measure of the acidity or basicity of the solution. The pH esteem on the pH scale shifts from 0 to 14. The concentration of hydronium particles is helpfully communicated on a logarithmic scale. The scale is known to be the Ph scale. The pH of acids and bases is defined as the negative logarithm (base 10) of the hydrogen ion (H+) activity.