Acetic Acid and Sodium Acetate Buffer System

CH3COOH ⇌ CH3COO− + H+

概述

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.

参与者

角色 物质 系数 状态
反应物 Acetic Acid CH₃COOH 1 (aq)

日常示例

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

工业重要性

乙酸盐缓冲液广泛应用于生化实验室、纺织染色工艺以及食品加工中,用于保持pH稳定。

属性

类型
Acid-Base
可逆
是
能量
吸热

相关反应

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).