What is the pH of a 0.10 M KOH solution?

Question

Quizplus · Accepted Answer

The pH of a 0.10 M KOH solution can be found by using the formula:

pH = 14 - log [OH-]

Since KOH is a strong base, we can assume that it completely dissociates in water to give K+ and OH-. Therefore, the concentration of hydroxide ions can be calculated from the molarity of KOH:

[OH-] = 0.10 M

Substituting this value into the pH formula gives:

pH = 14 - log (0.10)

pH = 14 - 1

pH = 13

Therefore, the correct answer is choice C (pH = 13).

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