Chemiluminescent Ammonia Fountain
Crystallization from Supersaturated Solutions of Sodium Acetate
Density and Miscibility of Liquids
Electrical Conductivity of Liquids and Solutions
Osmotic Pressure of Sugar Solution
Vapor Pressure of Solutions: Raoult’s Law
A Visual Demonstration of Raoult’s Law
Water Softening– Hard and Soft Water With Soap
Clean Air With the Cottrell Precipitator
Color of Sunset: Tyndall Effect
Getting Colder: Freezing Point Depression
Getting Hotter: Boiling Point Elevation by Nonvolatile Solutes
Salting Out: Making Liquids Immiscible
Volume Increase Upon Neutralization
Solubility of Carbon Dioxide in Water
A photo shows a thermocouple with a readout and a stoppered flask with glass tubing in a crystallizing dish with ice water on a hot plate. The tubing is attached to an inverted glass column on a ring stand with measurement markers. The glass column is in a dish with clear liquid.
Description: A one liter sample of water is cooled to about 4˚C, and dry ice is added to saturate the liquid with absorbed carbon dioxide. A means of collecting and measuring the volume carbon dioxide gas in solution is established and the captured liquid is warmed and stirred. The volume of gas collected is measured and the concentration of carbon dioxide dissolved in water is determined.
CO2(aq, sat) + Δ → CO2(g) + H2O(l)
Source: Ned Sibert
Year: 2018 Vol: N/A Page: N/A
Keywords: Solution, Carbon Dioxide, Aqueous, Temperature, Solubility, Henry’s law
Rating: 
Hazard: Low
- Cryogenic burn hazard
- Asphyxiation hazard
- Explosion hazard
Effectiveness: Average
- Results are observable with guidance
- Mild effects are observed
- Some connection from demo to course material
- Time to results is medium
- Good reliability
Difficulty: Medium
- Some intermediate steps to results
- Use of scientific equipment
- Demos at non-standard conditions
- Some careful manipulations required
- Training or practice required for proper performance
Safety Precaution:
- Eye protection required
- Thermal gloves required
- Prepare in a well-ventilated room
- Avoid inhalation of mists, vapors, or gases
Class: Properties of Solutions
Division: General Chemistry
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