Based on Henderson-Hasselbalch equation, at what pH value a weak acid would be 99.9% ionized? | Faculties

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Ranjeet

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📊 Biopharmaceutics and Pharmacokinetic

Q. Based on Henderson-Hasselbalch equation, at what pH value a weak acid would be 99.9% ionized?

(A) At pH equivalent to pKa - 3
(B) At pH equivalent to pKa + 3
(C) At pH equivalent to pKa – 1
(D) At pH equivalent to pKa + 1

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✅ Correct Answer: (B) At pH equivalent to pKa + 3

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