Calculateur de pKb — Formule

How to Calculate pKb

Formula

pKb = −log₁₀(Kb)

Where:

  • pKb = negative base-10 logarithm of Kb
  • Kb = base dissociation constant

    • A lower pKb indicates a stronger base. pKa + pKb = 14 at 25°C for a conjugate pair.

    Exemple Résolu

    Ammonia has Kb = 1.8 × 10⁻⁵.

    1. pKb = -log₁₀(Kb)
    2. pKb = -log₁₀(1.8 × 10⁻⁵)
    3. pKb = 4.74