Equilibrium of Chemical Systems- Boiling Two Liquids at Room Temperature
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
Boiling Two Liquids at Room Temperature
Description: Two low-boiling liquids are mixed and form an azeotropic mixture which boils spontaneously at room temperature.
Source: Journal of Chemical Education – Vol. 65
Year: 1988 Vol: 65 Page: 157
Keywords: Azeotropic mixture, Boiling point depression, Isopentane, Methyl formate
Rating: 
Hazard: Some
- Acute toxicity hazard
- Flammability hazard
- Inhalation hazard
Effectiveness: Good
- Good connection from demo to course material
- Mild effects are seen by audience
- Clear contrast between systems’ behavior
Difficulty: Medium
- Procedures with some intermediate steps to results
- Handling of organic chemicals
- Requires precise temperature control
Safety Precautions:
- Eye protection required
- Gloves required
- Perform in well-ventilated area
- ABC fire extinguisher on hand
- Chemically resistant surface required
- Use of UL approved three-prong plug and outlet required
Class: Equilibrium of Chemical Systems, Boiling point Depression
Division: Physical Chemistry
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