Ammonia and Ammonium Chloride Buffer System

NH3 + H2O ⇌ NH4+ + OH−

Descripción general

The ammonia/ammonium buffer system maintains pH near 9.25 (the pKb of ammonia corresponds to pKa of NH₄⁺ = 9.25). Ammonia acts as a weak base accepting protons when acid is added, while ammonium ions donate protons when base is added. This is one of the most commonly used basic buffer systems.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Ammonia NH₃ 1 (aq)
Reactivo Water H₂O 1 (l)

Ejemplo cotidiano

Ammonia-based cleaning solutions maintain their effectiveness because the NH₃/NH₄⁺ buffer system keeps the pH in the basic range.

Importancia industrial

Los tampones de amoníaco se utilizan en química analítica, en baños de galvanoplastia y en investigación biológica para mantener condiciones de pH básico.

Propiedades

Tipo
Acid-Base
Reversible
Sí
Energía
Endotérmico

Reacciones relacionadas

Hydrochloric Acid and Barium Hydroxide Acetic Acid and Sodium Acetate Buffer System Acetic Acid Dissociation in Water Ammonia and Hydrochloric Acid Ascorbic Acid and Sodium Hydroxide Barium Hydroxide and Ammonium Thiocyanate (Endothermic) Carbonic Acid and Sodium Hydroxide Aluminum Hydroxide as Amphoteric Acid with NaOH Aluminum Chloride and Chloride Ion (Lewis Acid-Base) Formic Acid and Sodium Hydroxide

Frequently Asked Questions

What is the equation for Ammonia and Ammonium Chloride Buffer System?
The balanced equation is: NH₃ + H₂O ⇌ NH₄⁺ + OH⁻.
What type of reaction is Ammonia and Ammonium Chloride Buffer System?
Ammonia and Ammonium Chloride Buffer System is a acid-base reaction. It is reversible under certain conditions.
Is Ammonia and Ammonium Chloride Buffer System exothermic or endothermic?
Ammonia and Ammonium Chloride Buffer System is endothermic (absorbs energy).