Buffer Solution (Henderson–Hasselbalch)

This interactive simulator explores Buffer Solution in Chemistry. Henderson–Hasselbalch vs strong acid: pH curve as H⁺ is added (mole model). Use the controls to change the scenario; watch the visualization and any graphs or readouts to connect the model with lectures, labs, and homework.

Who it's for: Best once you already know the basic definitions and want to build intuition. Typical context: Chemistry.

Key terms

  • buffer
  • solution
  • buffer solution
  • chemistry

How it works

Buffer solutions resist pH change because added protons are absorbed by the conjugate base. Past the buffering capacity (when A⁻ is depleted), pH collapses toward that of a strong acid.

Key equations

pH = pKa + log₁₀([A⁻]/[HA])