Vapor Pressure of Solutions: Raoult’s Law
Description: Video tape of different mole fractions of decane and diethyl ether being injected into mercury barometers. The drop in mercury level is related to the mole fraction of each of the components that make up solution.
This demonstration is also available on JCE “Chemistry Comes Alive!” Vol. 2 CD-Rom
Source: JCE software “Chemistry Comes Alive!”
Year: 1999 Vol: 76 Page: 1311
Keywords: Vapor pressure, Vapor pressure of solutions, Colligative properties, Mixtures, Mole fraction, Raoult’s Law
Rating: 
Hazard: Low
- Electric shock hazard
- Video or simulation
Effectiveness: Good
- Good connection from demo to course material
- Low failure rate
- Time to results is low
- Mild effects are seen by audience
- Observable with guidance
Difficulty: Low
- Examples involving models or simulations
- Simple procedures
Safety Precautions:
- Use of UL approved three-prong plug and outlet
- Eye protection required
Class: Video or Simulations, Properties of Solutions, Equilibrium, Vapor pressure
Division: General, Physical Chemistry
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