Sodium Bicarbonate and Hydrochloric Acid

NaHCO₃ + HCl → NaCl + H₂O + CO₂

Overview

Sodium bicarbonate (baking soda) reacts with hydrochloric acid to produce sodium chloride, water, and carbon dioxide gas. The bicarbonate ion acts as a base, accepting a proton to form carbonic acid, which immediately decomposes to water and CO₂. The effervescence is characteristic of bicarbonate-acid reactions.

Participants

Role	Substance	Coefficient	State
Reactant	Sodium Bicarbonate NaHCO₃	1	(s)
Reactant	Hydrochloric Acid HCl	1	(aq)
Product	Sodium Chloride NaCl	1	(aq)
Product	Water H₂O	1	(l)
Product	Carbon Dioxide CO₂	1	(g)

Everyday Example

Baking soda is used as a quick antacid remedy at home, and in baking where it reacts with acidic ingredients to produce CO₂ that makes dough rise.

Industrial Importance

Sodium bicarbonate is used in fire extinguishers (the CO₂ smothers flames), in water treatment, and as a cleaning agent. Annual production exceeds 1 million tonnes.

Properties

Type: Acid-Base
Reversible: No
Energy: Exothermic
ΔH: -12.1 kJ/mol

Related Reactions

Acetic Acid and Sodium Acetate Buffer System Acetic Acid and Sodium Hydroxide Neutralization Acetic Acid Dissociation in Water Aluminum Chloride and Chloride Ion (Lewis Acid-Base) Aluminum Hydroxide as Amphoteric Acid with NaOH Aluminum Hydroxide as Amphoteric Base with HCl Ammonia and Ammonium Chloride Buffer System Ammonia and Hydrochloric Acid Ascorbic Acid and Sodium Hydroxide Barium Hydroxide and Ammonium Thiocyanate (Endothermic)

Frequently Asked Questions

What is the equation for Sodium Bicarbonate and Hydrochloric Acid?

The balanced equation is: NaHCO₃ + HCl → NaCl + H₂O + CO₂.

What type of reaction is Sodium Bicarbonate and Hydrochloric Acid?

Sodium Bicarbonate and Hydrochloric Acid is a acid-base reaction.

Is Sodium Bicarbonate and Hydrochloric Acid exothermic or endothermic?

Sodium Bicarbonate and Hydrochloric Acid is exothermic (releases energy). The enthalpy change (ΔH) is -12.1 kJ/mol.