Henderson-Hasselbalch · pH = pKa + log([A⁻]/[HA])
unseel.com · buffer math · pKa · titration ratio
pH 7.4
[A⁻]/[HA] 1:1
State
pKa (fixed property)
HA (weak acid)
A⁻ (conjugate base)
Half-eq point (pH=pKa)
Unseel.com · Henderson-Hasselbalch Equation