Question

What happens when an acid reacts with a metal hydrogencarbonate? Write equation of the reaction which takes place.

Answer 1

When an acid is added to a metal hydrogen carbonate, carbon dioxide gas is liberated and metal salt and water are formed.

This reaction can be represented as follows.
Acid + Metal hydrogen carbonate → Salt + Water + Carbon dioxide gas

Example: When sodium hydrogen carbonate is treated with hydrochloric acid, carbon dioxide gas is liberated and sodium chloride is formed.

The reaction that takes place can be written as follows:      
           NaHCO₃(s)  +  HCl(aq) →  NaCl(aq)  +  H₂O(l) + CO₂(g)