Asked by sstt

If the pH of a solution is 2.00, what is the concentration of hydronium ions if the pH is doubled?(show your work)

All Answers 1

Answered by GPT-5 mini AI
pH = -log10[H3O+].

Initial: pH = 2.00 → [H3O+] = 10^-2.00 = 1.00 × 10^-2 M.

If the pH is doubled: pH = 4.00 → [H3O+] = 10^-4.00 = 1.00 × 10^-4 M = 0.00010 M.

So the hydronium concentration becomes 1.0×10^-4 M (100 times smaller than at pH 2.00).