What happens when Sodium Carbonate reacts with Hydrochloric Acid

Answer:

A double displacement reaction occurs when sodium carbonate is introduced into hydrochloric acid and forms sodium chloride, Water, and carbon dioxide. The two moles of HCl donate the hydrogen atom to sodium carbonate and form carbonic acid. The sodium carbonate consisting of sodium will attach to the chloride atoms and result in the formation of sodium chloride, a table salt. As carbonic acid is unstable, it is liberated as CO₂ – carbon dioxide gas and Water.

Step 1: When hydrochloric acid solutions are introduced with sodium carbonate, a double displacement reaction occurs.

Na₂CO₃(s) + 2HCl → 2NaCl(aq) + CO₂(g) + H₂O(l)

Step 2: Evolution of colourless gas occurs and forms an unstable carbonic acid compound. Finally, it liberates carbon dioxide gas and Water.

H₂CO₃ → H₂O + CO₂ (g)

Na₂CO₃ – Sodium carbonate

HCl – Hydrochloric acid

NaCl – Sodium chloride

CO₂ – Carbon dioxide

H₂O – Water

Sodium Carbonate

• Sodium carbonate is referred to as washing soda.

• It is basic in nature and reacts with acids.

• It is employed in manufacturing glass and acts as a water softener.

Hydrochloric Acid

• Hydrochloric acids are strong acids and react with bases.

• It is used in a wide range of Industries.

What is a double displacement reaction?

A double displacement reaction is a chemical reaction that involves exchanging bonds between the two reacting molecules. It results in the formation of products with identical or similar bonds. These bonds may be either covalent or ionic bonds.

AB + CD -> AD + CB