The strength of an acid or base can be judged based on its pH value. A lower pH indicates a stronger acid, while a higher pH indicates a stronger base.
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The strength of a given acid or base can be judged by its ability to ionize or dissociate in water. Strong acids and bases completely ionize in solution, producing a high concentration of H⁺ or OH⁻ ions, respectively. Conversely, weak acids and bases only partially ionize, resulting in lower concentrations of ions. pH measurement provides a quantitative indication of acidity or basicity, with lower pH values indicating stronger acids and higher values indicating stronger bases. Additionally, the extent of ionization can be assessed through acid dissociation constants (Ka) for acids or base dissociation constants (Kb) for bases.