Acetic Acid and Sodium Acetate Buffer System

CH3COOH ⇌ CH3COO− + H+

Descripción general

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.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Acetic Acid CH₃COOH 1 (aq)

Ejemplo cotidiano

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

Importancia industrial

Los tampones de acetato se emplean ampliamente en laboratorios de bioquímica, en procesos de tintura textil y en el procesamiento de alimentos para mantener un pH constante.

Propiedades

Tipo
Acid-Base
Reversible
Sí
Energía
Endotérmico

Reacciones relacionadas

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).