Question

A solution has an [H+] = 3.92x10-5 M . What is the pH of this solution?

Answer 1

We are given the concentration of the hydrogen ions in this solution as: [ H + ] = 3.92 × 10^−5 M .

pH=-log[H+]

The pH is then equal to: pH = − log[3.92 × 10^−5]

Thus, pH = 4.406.

Hope it helps.