Question

What is the chemical formula for sodium bicarbonate?

• A. NaCl
• B. Na2CO3
• C. NaHCO3
• D. NaOH

Answer 1

Answer:

C. NaHCO3

Chemical Formula and Properties of Sodium Bicarbonate

• The chemical formula for sodium bicarbonate is NaHCO₃.
• It is an inorganic compound that is a salt of a sodium cation (Na⁺) and a bicarbonate anion (HCO₃^-).
• Sodium bicarbonate is commonly known as baking soda.
• It is a white crystalline solid that is slightly soluble in water.

Common Uses and Applications

• Leavening Agent: In baking, when heated or mixed with an acid, it releases carbon dioxide gas, causing doughs and batters to rise. This is a fundamental principle in baking chemistry.
• Antacid: It can neutralize stomach acid, providing relief from indigestion and heartburn. The reaction involves the bicarbonate ion reacting with hydrochloric acid (HCl) in the stomach.
• Cleaning Agent: Its mild abrasive properties and ability to deodorize make it useful for household cleaning.
• Fire Extinguishers: Certain types of dry chemical fire extinguishers utilize sodium bicarbonate. When heated, it decomposes to release carbon dioxide, which smothers flames by displacing oxygen.

Industrial Significance

• Sodium bicarbonate is produced on a large scale, primarily through the Solvay process or by mining natural trona ore deposits.
• It finds extensive use in various industries, including the production of glass, detergents, and pharmaceuticals.