Ammonia and Ammonium Chloride Buffer System

NH3 + H2O ⇌ NH4+ + OH−

Обзор

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.

Участники

Роль Вещество Коэффициент Состояние
Реагент Ammonia NH₃ 1 (aq)
Реагент Water H₂O 1 (l)

Пример из жизни

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

Промышленное значение

Ammonia buffers are used in analytical chemistry, in electroplating baths, and in biological research for maintaining basic pH conditions.

Свойства

Тип
Acid-Base
Обратимая
Да
Энергия
Эндотермическая

Связанные реакции

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).