Japan Pharmacist Exam Practice Questions - Japan National Pharmacist Examination (Yakuzaishi Kokka Shiken) Exam

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A buffer is prepared from acetic acid and sodium acetate at equal molar concentrations. What is the most defensible pH estimate?

pH equals 7.4 because all buffers are physiologic pH equals the pKa of acetic acid pH equals twice the pKa because both acid and base are present pH cannot be estimated without knowing total buffer volume

Correct Answer:

pH equals the pKa of acetic acid

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