Question

What is the pH of a solution that has a hydrogen ion concentration of 1.0 x 10⁻¹¹ M?

1) 1.0
2) 3
3) 10
4) 11

Answer 1

The pH of a solution with a hydrogen ion concentration of 1.0 x 10‑11 M is 11, indicating that the solution is basic. Option 4

Step-by-step explanation:

To calculate the pH of a solution when given the hydrogen ion concentration ([H+]), we use the formula:

pH = -log[H+]

In this case, the hydrogen ion concentration is 1.0 x 10‑11 M. By applying the formula:

pH = -log(1.0 x 10‑11)

We find that the pH is:

pH = -(-11) = 11

Therefore, the pH of the solution is 11, which indicates that the solution is basic since its pH is greater than 7. Option 4