A solution with a pH of 3 has a hydronium ion concentration of
A)10⁻³ mol/L.
B)10³ mol/L.
C)10 mol/L.
D)-10 mol/L.

Question

Quizplus · Accepted Answer

The pH of a solution is defined as the negative logarithm of the hydronium ion concentration. Therefore, pH = -log[H3O+]. By rearranging this equation, we can determine the hydronium ion concentration: [H3O+] = 10^-pH. In this case, the pH is 3, so [H3O+] = 10^-3 mol/L. Therefore, choice A is the correct answer.

A Solution with a PH of 3 Has a Hydronium