Understanding the Chemistry
* KOH is a strong base. This means it dissociates completely in water, releasing hydroxide ions (OH-) into the solution.
* pH and pOH Relationship: The pH and pOH of a solution are related by the equation: pH + pOH = 14
Calculations
1. Find the pOH:
* Since KOH is a strong base, the concentration of OH- ions is equal to the initial concentration of KOH.
* [OH-] = 0.0001 M = 1 x 10^-4 M
* pOH = -log[OH-] = -log(1 x 10^-4) = 4
2. Calculate the pH:
* pH + pOH = 14
* pH = 14 - pOH = 14 - 4 = 10
Therefore, the pH of a 0.0001 M potassium hydroxide solution is 10.
