Buffer pH Calculator Calculator
Calculates the pH of a buffer solution from weak acid and conjugate base using the Henderson–Hasselbalch equation.
Info
Buffer solutions are systems that resist changes in pH. This tool calculates the pH of weak acid–conjugate base pairs using the Henderson–Hasselbalch equation: pH = pKa + log([A-]/[HA]) Suitable for chemistry courses and laboratory calculations.
- Buffer solution: contains a weak acid + conjugate base.
- pH = pKa + log([A-]/[HA])
- Strongest buffering occurs when [A-] = [HA].
- The system is most stable when pH ≈ pKa.
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