Chemiluminescent Ammonia Fountain
Crystallization from Supersaturated Solutions of Sodium Acetate
Density and Miscibility of Liquids
Electrical Conductivity of Liquids and Solutions
Osmotic Pressure of a 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: The Tyndall Effect
Getting Colder: Freezing Point Depression
Getting Hotter: Boiling Point Elevation by Nonvolatile Solutes
Salting Out: Making Liquids Immiscible
Volume Increase Upon Neutralization
Shapes of Soap Films and Bubbles
Solubility of Carbon Dioxide in Water
Chemiluminescent Ammonia Fountain
An inverted round bottom, stoppered flask with fluorescent blue liquid is connected to an orange bulb and glass tube attached to a Y-connector. The Y-connector is attached to two tubes, with each end of the tube placed in a flask. The flask on the right contains more clear liquid than the left flask contains. The inverted flask is held by a ring stand.
Description: A standard ammonia fountain, but one in which two solutions from the standard luminol reaction are drawn from separate flasks. When the solutions mix, the fountain luminesces.
Source: Journal of Chemical Education
Year: 1990 Vol: 67 Page: 339
Keywords: Luminol, Ammonia, Vacuum, Chemiluminescence, Solubility
Rating: 
Hazard: Medium
- Inhalation hazard
- Acute toxicity hazard
- Flammability hazard
- Skin corrosion hazard
- Eye damage hazard
- Aquatic toxicity hazard
- Implosion hazard
Effectiveness: Excellent
- Spectacular effects are seen by audience
- Deeply engaging to audience
- Good connection to course material
- Clear contrast between behavior of systems
- Counterintuitive effects
- Time to results is low
- Medium/low failure rate
Difficulty: Low
- Simple procedures
- Simple manipulations for most to perform
Safety Precautions:
- Eye protection required
- Gloves required
- Absorbent material on hand
- Preform in a well-ventilated area
- Sodium bicarbonate on hand
Class: Solubility, Properties of Solutions, Acids and Bases
Division: General
Return to General Chemistry Demonstrations