The [ H₃ O+] of a solution with pH = 2 is
A)10 M.
B)-10 M.
C)1 × 102 M.
D)1 × 10-2 M.
E)1 × 10-12 M.

Question

Quizplus · Accepted Answer

The pH of a solution can be calculated using the formula pH = -log[H₃O+]. Rearranging this formula, we can find the [H₃O+] in the solution as [H₃O+] = 10^-pH. Substituting pH = 2, we get [H₃O+] = 10^-2 = 0.01 M, which can be written as 1 × 10^-2 M. Therefore, the correct answer is D.

The [ H₃ O+] of a Solution with PH =