Baking soda eliminates many odors primarily by neutralizing acidic compounds that cause smells.
The Science Behind Baking Soda and Odors
Baking soda, scientifically known as sodium bicarbonate, is an alkaline substance. Many unpleasant odors are caused by acidic molecules released into the air.
According to information from September 19, 2023, when baking soda comes into contact with these acidic odors, a chemical reaction occurs. This reaction neutralizes the acidic compounds. Neutralization results in either:
- The odors being eliminated entirely.
- The production of less odorous compounds.
This process effectively changes the pH of the substance or environment where the odor exists, helping to remove the smell rather than just masking it.
Key Mechanism: Neutralization
The core principle is a simple acid-base reaction:
- Baking soda acts as a base (alkaline).
- Odor molecules are often acids.
- When mixed, they react to form salt and water, which are typically odorless or significantly less odorous.
This chemical interaction is why baking soda is effective against smells caused by things like sour milk (lactic acid), body odor (various acids), or refrigerator smells (often a mix of acidic compounds).
How This Mechanism is Used
- In the Refrigerator: An open box of baking soda absorbs airborne acidic odor molecules, neutralizing them.
- In Drains: Pouring baking soda followed by vinegar (an acid) causes a reaction that can help break down and neutralize odor-causing substances in pipes.
- On Carpets/Upholstery: Sprinkling baking soda onto fabrics allows it to absorb and neutralize odors before being vacuumed up.
Unlike air fresheners that simply cover up smells with stronger fragrances, baking soda actively works to break down the odor-causing molecules themselves through this neutralization process.
