What is pH of 0.05 M potassium hydroxide solution (KOH) solution?

Potassium hydroxide is a strong base that ionizes in water to produce potassium and hydroxyl (OH^-) ions. The following equations can be used to calculate pH for a strong base solution:

pOH = - log [OH^-]

[OH^-] = [strong base] = 0.05 M

pOH = - log 0.05 = 1.30

pH + pOH =14.00

pH = 14.00 - pOH

pH = 14.00 - 1.30 = 12.70

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Long equation for calculating pH of strong base solution.