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As per your syllabus, the pH of an acidic buffer is given by which expression?
ApH = pKa + log([salt]/[acid])
BpH = pKa × log([salt]/[acid])
CpH = pKw − pKa
DpH = pKa − log([salt]/[acid])
Answer & Solution
Correct answer: A. pH = pKa + log([salt]/[acid])
syllabus eqn 6.40: Henderson-Hasselbalch — pH = pKa + log([A⁻]/[HA]).
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