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Potassium hydrogen phthalate (KHP; molar mass= 204.2 g/mol) is one of the most commonly used acids for standardizing solutions containing bases. KHP is a monoprotic weak acid with Ka= 3.91x10^-6. Calculate the pH of the solution that results when 0.55 g of KHP is dissolved in enough water to produce 25.0 ml of solution.

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