* The Ingredients: Soluble aspirin tablets contain aspirin (acetylsalicylic acid) and a base like sodium bicarbonate (baking soda).
* The Reaction: When the tablet is added to water, the aspirin and sodium bicarbonate react. The sodium bicarbonate reacts with water to form carbonic acid (H₂CO₃). This acid then decomposes into carbon dioxide gas (CO₂) and water (H₂O).
* The Fizz: The carbon dioxide gas released in this reaction is what causes the fizzing.
The chemical reaction can be summarized as:
Sodium bicarbonate (NaHCO₃) + Aspirin (acetylsalicylic acid) + Water (H₂O) → Carbon dioxide (CO₂) + Water (H₂O) + Other products
In short, the fizzing is a clear indication of a chemical reaction taking place, where the aspirin and sodium bicarbonate react to release carbon dioxide gas.
