Acetic Acid and Sodium Acetate Buffer System

CH3COOH ⇌ CH3COO− + H+

Tổng quan

The acetic acid/sodium acetate buffer system resists pH changes by shifting equilibrium in response to added acid or base. When acid is added, acetate ions consume H⁺; when base is added, acetic acid donates H⁺. This buffer is most effective near pH 4.75 (the pKa of acetic acid). The Henderson-Hasselbalch equation governs the buffer pH.

Người tham gia

Vai trò Chất Hệ số Trạng thái
Chất phản ứng Acetic Acid CH₃COOH 1 (aq)

Ví dụ thực tế

Vinegar-based salad dressings maintain their characteristic sour taste because the acetic acid/acetate system buffers the pH around 4.75.

Tầm quan trọng công nghiệp

Acetate buffers are widely used in biochemistry laboratories, in textile dyeing processes, and in food processing to maintain consistent pH.

Tính chất

Loại
Acid-Base
Thuận nghịch
Có
Năng lượng
Thu nhiệt

Phản ứng liên quan

Hydrochloric Acid and Barium Hydroxide 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) Acetic Acid and Sodium Hydroxide Neutralization Formic Acid and Sodium Hydroxide

Frequently Asked Questions

What is the equation for Acetic Acid and Sodium Acetate Buffer System?
The balanced equation is: CH₃COOH ⇌ CH₃COO⁻ + H⁺.
What type of reaction is Acetic Acid and Sodium Acetate Buffer System?
Acetic Acid and Sodium Acetate Buffer System is a acid-base reaction. It is reversible under certain conditions.
Is Acetic Acid and Sodium Acetate Buffer System exothermic or endothermic?
Acetic Acid and Sodium Acetate Buffer System is endothermic (absorbs energy).