What does ‘p’ represent in pH ?

🔑Key Points:
pH is a measure of the concentration of protons (H+) in a solution.
The concept was introduced by S.P.L. Sorensen in 1909.
The p stands for the German "Potenz", meaning power or concentration, and the H for the hydrogen ion (H+).
The "pH" value is an approximate number between 0 and 14 that indicates whether a solution is acidic, basic or neutral.
At pH 7, the substance or solution is neutral.
If pH >7, the solution is basic
If pH < 7, the solution is acidic.
The pH scale does not have an upper nor lower limit.