Equilibrium of Chemical Systems- Salting Out: Making Liquids Immiscible
Equilibrium Between Nitrogen Dioxide and Dinitrogen Tetroxide
Effect of Pressure on Melting Point of Ice
The Liquid Phase of Carbon Dioxide
Vapor Pressure of Pure Liquids
Getting Colder: Freezing-Point Depression
Getting Hotter: Boiling-Point Elevation by Nonvolatile Solutes
Osmotic Pressure of a Sugar Solution
Vapor Pressure of Solutions: Raoult’s Law
Boiling Two Liquids at Room Temperature
Salting Out: Making Liquids Immiscible
Electrolysis of Potassium Iodide
Hydrogen Ion Concentration Cell
Acid-Base Properties of Amino Acids
Electrical Conductivity of Liquids and Solutions
Instrumental Recording of a Titration Curve
A Visual Demonstration of Raoult’s Law
Salting Out: Making Liquids Immiscible
Description: Potassium carbonate added to a solution of methanol in water produces two liquid phases.
Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1989 Vol: 3 Page: 266
Rating: 
Keywords: Salting out, Phase separation, Methanol, Water
Hazard: Some
- Flammability hazard
- Acute toxicity hazard – oral, dermal, inhalation
- Serious eye damage hazard
- Specific organ toxicity single exposure -eyes,
Effectiveness: Good
- Low failure rate
- Results are observable without guidance
- Time to results is medium
- Some connection from demo to course material
- Mild effects are seen by audience
Difficulty: Low
- Does not involve deep attention
- Manipulations are simple for most to perform
- Simple procedures
- Demos in which a display is used
Safety Precautions:
- Absorbent materials on hand
- Eye protection required
- Gloves are required
- ABC fire extinguisher on hand
- Use UL approved three-prong plug and outlet
- Perform in a well-ventilated area
Class: Properties of Solutions, Equilibrium of Chemical Systems, Solubility
Division: General, Physical Chemistry
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