The Visible Mole
Description: A mole of carbon dioxide is generated from one mole of sodium bicarbonate and excess HCl. The gas is trapped in a 25 liter graduated cylinder.
Source: Commercially available device & instructions – Flinn Scientific Inc.
Year: N/A Vol: N/A Page: N/A
Keywords: Stoichiometry, Carbon dioxide, Molar volume, Hydrochloric acid, Acid base reactions
Rating: 
Hazard: Medium
- Skin corrosion hazard
- Serious eye damage
- Corrosive to metals
- Inhalation hazard
Effectiveness: Average
- Moderate failure rate
- Time to results is high
- Mild effects are seen by audience
- Some connection from demo to course material
- Results are observable without guidance
Difficulty: High
- Injections of chemicals
- Multi-step procedure
- Manipulation-dependent results
- Use of toxic reagents
- Pressure tight system in use
- Prior practice recommended
Safety Precautions:
- Perform in a well-ventilated area
- Use of chemically resistant surface
- Eye protection required
- Gloves required
- Sodium bicarbonate on hand
- Sharps cover on hand
- Avoid exposure to mists, gases, or vapors
Class: Acid-Base, Gas Producing Reaction
Division: General
The demonstration The Visible Mole may be found under Gases- The Visible Mole.
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