Question

Baking soda is used as an antacid.

Hint:

Baking soda neutralizes excess acid, so it works as an antacid.

Answer 1

Why Baking Soda is Used as an Antacid:

Baking soda is used as an antacid because it helps neutralize excess acid present in the stomach. The chemical name of baking soda is Sodium Hydrogen Carbonate (also called Sodium Bicarbonate), and its chemical formula is NaHCO₃.

Detailed Explanation:

1. Cause of Acidity:
The stomach produces hydrochloric acid (HCl) to help in digestion. Sometimes, excess production of this acid leads to acidity, indigestion, and a burning sensation in the stomach.

2. Nature of Baking Soda:
Baking soda is a mild base. Since acids and bases neutralize each other, baking soda can reduce the harmful effects of excess stomach acid.

3. Neutralization Reaction:
When sodium hydrogen carbonate reacts with hydrochloric acid in the stomach, it forms salt, water, and carbon dioxide gas.

Chemical Equation:
NaHCO₃ + HCl → NaCl + H₂O + CO₂

4. Relief from Acidity:
The neutralization reduces the acidic nature of the stomach contents, thereby providing relief from indigestion and heartburn.

Conclusion:
Baking soda acts as an antacid because it is a mild base that neutralizes excess hydrochloric acid in the stomach, giving quick relief from acidity and indigestion.