Question

Give one example of chemical reaction showing evolution of gas

Answer 1

Answer:

Our example of Alka-Seltzer in water is a type of acid base reaction. ... Citric acid is an acid, and sodium bicarbonate is the base. The atoms of these reactants are rearranged when they come into contact with each other and reassembled to form water, carbon dioxide, the gas product, and sodium citrate.

Answer 2

Answer:

The chemical reaction between sodium carbonate and dilute hydrochloric acid is carecterised by the evolution of carbon dioxide gas