Ammonia and Ammonium Chloride Buffer System

NH3 + H2O ⇌ NH4+ + OH−

Tổng quan

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.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Ammonia NH₃ 1 (aq)
Chất phản ứng Water H₂O 1 (l)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

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

Tính chất

Loại
Acid-Base
Thuận nghịch
Có
Năng lượng
Thu nhiệt

Phản ứng liên quan

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) Hydrochloric Acid and Sodium Hydroxide Neutralization Nitric Acid and Potassium Hydroxide Neutralization Hydrochloric Acid and Barium 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).