Electrical Conductivity of Liquids and Solutions
Lecture Size Breath Alcohol Test
Reaction of Potassium Metal with Bromine
Reduction of Copper Oxide by Hydrogen
Using Large Glass Cylinders to Demonstrate Precipitation Reactions
Coin-Operated Red, White, and Blue Fountain: Reaction of Nitric Acid and Copper
Conductivity of Acetic Acid – Water Mixtures
Effect of Ion-Exchange Resin on Conductivity
Oxidation of Chloride Ion by Permanganate
Precipitation Reactions
Description: There are many possible precipitation reactions, including lead nitrate and sodium iodide or silver nitrate and sodium chloride.
This demonstration is also available on video and JCE “Chemistry Comes Alive!” Vol. 1 CD-Rom.
Source: UW Card Catalog
Year: 1999 Vol: 76 Page: 1311
Keywords: Precipitation, Solid, Solubility
Rating: 
Hazard: Some
- Acute toxicity hazard – oral, dermal
- Aquatic toxicity hazard
- Carcinogenicity hazard
- Mutagenicity hazard
- Electric shock hazard
Effectiveness: Good
- Results are observable without guidance
- Good connection from demo to course material
- Mild effects are seen by audience
- High reliability
- Time to results is low
Difficulty: Low
- Simple procedures
- Simple manipulations for most to perform
- Toxic reagents in use
Safety Precautions:
- Gloves required
- Eye protection required
- Absorbent material on hand
- Spill kit on hand
- Perform in a well-ventilated area
- Use of UL approved three-prong plug and outlet
Class: Precipitations, Solubility, Ions
Division: General
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