How to Extract Bismuth Metal from Pepto-Bismol Pills

TL;DR

To extract bismuth metal from Pepto-Bismol pills, crush the pills and mix them with hydrochloric acid, creating bismuth chloride. Then, add aluminum foil to convert the bismuth chloride into bismuth metal. The resulting bismuth metal is filtered, washed, and dried for use, though purchasing bismuth online may be more efficient.

Transcript

Bismuth compounds have many different uses in things like cosmetics, pigments and pharmaceuticals. The most notable use of bismuth in pharmaceuticals is its use in Pepto-Bismol. In Pepto-Bismol, it appears as a compound known as bismuth subsalicylate. Each pill actually contains quite a lot of this molecule and in this video we're gonna pull out th... Read More

Key Insights

• ❓ Bismuth compounds, including bismuth subsalicylate, are used in cosmetics, pigments, and pharmaceuticals.
• 💊 The extraction of bismuth metal from Pepto-Bismol pills involves crushing the pills and reacting bismuth subsalicylate with hydrochloric acid.
• 🤘 Aluminum foil is added to convert the bismuth chloride into bismuth metal, which is then filtered, washed, and dried.

Questions & Answers

Q: What is the active ingredient in Pepto-Bismol?

The active ingredient in Pepto-Bismol is bismuth subsalicylate, which is used to treat gastrointestinal symptoms.

Q: How is bismuth metal extracted from Pepto-Bismol pills?

The pills are crushed and mixed with hydrochloric acid to produce bismuth chloride and salicylic acid. Aluminum foil is then added to convert the bismuth chloride into bismuth metal.

Q: Why is the solution filtered after adding bismuth powder?

The solution is filtered to remove the precipitated salicylic acid, which is not very soluble in water.

Q: Why is the bismuth metal heated under an inert atmosphere?

Heating the bismuth metal under an inert atmosphere prevents oxidation. If heated slightly, the bismuth reacts with oxygen to form bismuth oxide, but at very high temperatures, the oxide breaks down to form bismuth metal and oxygen.

Summary & Key Takeaways

• Bismuth compounds, such as bismuth subsalicylate found in Pepto-Bismol, have various uses in cosmetics, pigments, and pharmaceuticals.

• The extraction process involves crushing Pepto-Bismol pills and adding hydrochloric acid to produce bismuth chloride and salicylic acid.

• Aluminum foil is then added to convert the bismuth chloride into bismuth metal, which is filtered, washed, and dried.