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Henderson-Hasselbalch Calculator
Calculate the pH of a buffer solution
Formula: $\text{pH} = \text{p}K_a + \log\left(\frac{[\text{A}^-]}{[\text{HA}]}\right)$
Where $[\text{A}^-]$ is the concentration of the conjugate base and $[\text{HA}]$ is the concentration of the weak acid.
Where $[\text{A}^-]$ is the concentration of the conjugate base and $[\text{HA}]$ is the concentration of the weak acid.
Buffer Components
Calculation Results
⚠️ The Henderson-Hasselbalch approximation is highly accurate for buffer solutions where the concentration of both the acid and its conjugate base are significantly higher than the $H^+$ or $OH^-$ ions resulting from dissociation (typically $10^{-3}\text{ M}$ to $1\text{ M}$).