What is the Henderson-Hasselbalch equation?
The Henderson-Hasselbalch equation is an equation that determines the pH pf a buffer.
For a solution of a weak acid and its conjugate base,
HA + H₂O ⇌ H₃O⁺ + A⁻
For a solution of a weak base and its conjugate acid,
B+ H₂O ⇌ BH⁺ + OH⁻