Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?

Question

Quizplus · Accepted Answer

pH is defined as the negative logarithm of the hydrogen ion concentration (pH = -log[H+]). Therefore, to find the hydrogen ion concentration, we need to take the inverse logarithm of the negative pH value: [H+] = 10^(-pH). Substituting pH = 4.0, we get: [H+] = 10^(-4.0) = 10^(-4) M. Therefore, the correct answer is C: 10^-4 M.

Measurements Show That the PH of a Particular Lake Is