Determine the dissociation Enthalpy of weak base Ammonium Hydroxide

Dissociation enthalpy of weak base Ammonium hydroxide (NH₄OH)

Let consider,

Strong Acid, HCl = H⁺ + Cl^– (Completely)

Strong base, NaOH = Na⁺ + OH^– (Completely)

Weak base, NH₄OH = NH₄⁺ + OH^– — energy (completely)

or, NH₄OH + energy = NH₄⁺ + OH^–

The energy is used for dissociation because of NH₄OH is weak base. This energy is used from solution. The dissociation enthalpy of NH₄OH = (57.32 — 51.46) Kj mol^-1 = 5.86 Kj mol^-1