The pKa value is crucial in chemistry for understanding acid strength and predicting ionization states. Our online pKa calculator simplifies complex calculations, allowing you to quickly determine pKa from pH, Ka, or acid and base concentrations. Ideal for students, researchers, and lab work.
Formula:
To calculate pKa from the acid dissociation constant (Ka), use the formula:
pKa = -log₁₀(Ka)To calculate pKa using the Henderson-Hasselbalch equation (from pH and concentrations of conjugate base [A⁻] and weak acid [HA]):
pKa = pH - log₁₀([A⁻]/[HA])