What is the hydronium ion concentration of an acid rain sample that has a pH of 3. 45? A) 2.82 × 10^-11 mol L^-1 B) 3.55 × 10^-4 mol L^-1 C) 3. 45 mol L^-1 D) 10. 55 mol L^-1

Question

Quizplus · Accepted Answer

The pH of a solution is defined as the negative logarithm of the hydronium ion concentration, so to find the hydronium ion concentration we use the equation: pH = -log[H3O+]. Rearranging this equation, we get [H3O+] = 10^-pH. Substituting the pH value of 3.45 into this equation gives us [H3O+] = 3.55 x 10^-4 mol/L. Therefore, the correct choice is B.

What Is the Hydronium Ion Concentration of an Acid Rain