Question

The pH of an aqueous solution of weak mono acidic base is 11. What is the [H\(^+\)] of the solution? [pKw = 14]

• A. \(1 \times 10^{-11}\) M
• B. \(1 \times 10^{-13}\) M
• C. \(1 \times 10^{-14}\) M
• D. \(1 \times 10^{-3}\) M
• E. \(1 \times 10^{-10}\) M

Hint:

Don't get confused by "mono acidic base".
If the question directly gives you the pH, you can always find \([H^+]\) using \(10^{-\text{pH}}\).
If you needed \([OH^-]\), you would first calculate pOH = 14 - 11 = 3.

Answer 1

The Correct Option is A