Carbonic Acid Dissociation (Blood Buffer)

H2CO3 ⇌ HCO3− + H+

Visão geral

The carbonic acid/bicarbonate buffer system is the primary blood buffer maintaining pH between 7.35 and 7.45. Carbon dioxide dissolves in blood to form carbonic acid, which dissociates to bicarbonate and hydrogen ions. The enzyme carbonic anhydrase catalyzes the CO₂ hydration. Disruption causes acidosis or alkalosis.

Participantes

Papel Substância Coeficiente Estado
Reagente Carbonic Acid H₂CO₃ 1 (aq)

Exemplo do cotidiano

When you exercise hard and breathe heavily, your body is using this buffer system to prevent dangerous pH changes from metabolic acid production.

Importância industrial

A compreensão do tampão bicarbonato é essencial em medicina para a gestão de distúrbios ácido-base, na medicina transfusional e na conceção de soluções de diálise.

Propriedades

Tipo
Acid-Base
Reversível
Sim
Energia
Endotérmico
Catalisador
Carbonic anhydrase (in blood)

Reações relacionadas

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 Carbonic Acid Dissociation (Blood Buffer)?
The balanced equation is: H₂CO₃ ⇌ HCO₃⁻ + H⁺.
What type of reaction is Carbonic Acid Dissociation (Blood Buffer)?
Carbonic Acid Dissociation (Blood Buffer) is a acid-base reaction. It is reversible under certain conditions.
Is Carbonic Acid Dissociation (Blood Buffer) exothermic or endothermic?
Carbonic Acid Dissociation (Blood Buffer) is endothermic (absorbs energy).
What conditions are needed for Carbonic Acid Dissociation (Blood Buffer)?
This reaction requires a catalyst (Carbonic anhydrase (in blood)).