Respuesta :
Answer:
the concentration of hydrogen ions in solution
Explanation:
pH stands for potenz of hydrogen.
pH is measure of hydrogen ion concentration.
pH is calculated as :
pH = -log[H⁺]
where [H⁺] is concentration of hydrogen ions.
Thus pH is measure of hydrogen ions concentration.
the other statements are wrong
i) total concentration of oxygen is not related to pH measure.
ii) total number of acid molecules is also not direct measure of pH.
iii) total number of base molecules cannot be measure of pH.