What does the pH of a solution measure?

O A. Color

O B. Volume

O c. Temperature

O D. Acidity

D is the correct answer acidity

Explanation:

pH is the logarithmic measurement of the H3O+-concentration in water solutions.

By definition: pH = - log[H3O+]

Example: [H3O+] = 1.0*10-7 mol/L in neutral, pure water (at 25oC), so

pH = - log (H3O+) = - log (1.0*10-7) = 7.0