Question

What is the mathematical expression of pH​

Answer 1

Answer:

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression:

pH = - log [H3O+].

Example: Find the pH of a 0.0025 M HCl solution. The HCl is a strong acid and is 100% ionized in water. The hydronium ion concentration is 0.0025 M. Thus:

pH = - log (0.0025) = - ( - 2.60) = 2.60

Answer 2

pH equal to the negative logarithm of concentration of h positive ion

$ph = - log( {h}^{ + })$