Final answer:
The pH of a solution with a hydroxide ion concentration of 0.23M is approximately 13.36, indicating a basic solution.
Step-by-step explanation:
The student is asking about the pH of a solution with a hydroxide ion concentration of 0.23M. To determine the pH, we can first calculate the pOH using the formula pOH = -log[OH-]. The pOH value can then be used to find the pH since pH + pOH = 14 at 25 °C.
Calculating the pOH:
pOH = -log(0.23)
pOH ≈ 0.64
Now, to find the pH:
pH = 14 - pOH
pH = 14 - 0.64
pH ≈ 13.36
Therefore, the pH of the solution is approximately 13.36, indicating that the solution is basic.