Chromatography of Spinach Extract
Extraction of Metals With Dithizone
Partitioning of Iodine in Solution
Computer Simulation of Mass Spectroscopy
Magic Sand Models the Hydrophobic Effect
Reverse Phase Separation of Dyes
Water Softening- Hard and Soft Water With Soap
Effect of Ion-Exchange Resin on Conductivity
Description: The conductivity of salt solutions are tested before and after they are run through anion-exchange columns.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1989 Vol: 3 Page: 146
Keywords: Salt solutions, Anion-Exchange columns, Conductivity
Rating: 
Hazard: Some
- Electrocution hazard
Effectiveness: Good
- Good connection from demo to course material
- Time to results is medium
- Good reliability
- Mild effects are seen by audience
- Secondary effects are seen by audience
Difficulty: Medium
- Use of conductivity apparatus
- Some intermediate steps to results
- Simple procedures
- Sequential manipulations
Safety Precautions:
- Gloves required
- Eye protection required
- Insulated spatula required
- Isolation transformer recommended
- Use UL approved three-prong plug and outlet
Class: Separations, Conductivity
Division: General, Analytical Chemistry
Return to Analytical Chemistry Demonstrations