10 examples a chemical reaction showing evolution of gas
Answers
One trick to recognizing gas evolution reactions is knowing what type of reactions typically produce gases. One of the most common gas evolution reactions is an acid base reaction, where an acid is combined with a base to produce water and carbon dioxide. This is also commonly called a neutralization reaction, since the acid and base neutralize each other to make water.
Our example of Alka-Seltzer in water is a type of acid base reaction. When the Alka-Seltzer tablet starts to dissolve it releases the two components, citric acid and sodium bicarbonate. 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. In our Alka-Seltzer reaction, the bubbles are the product carbon dioxide and are what causes the drink to fizz.
Alka-Seltzer tablets create acid base reactions that are one type of gas evolution reaction
Alka Seltzer