Diffusion of a Liquid
Description: Colored solutes, either liquid or solids, are placed in the bottom of a container, and a solvent is poured over them. Over a period of time, the color of the solute rises in the solvent.
Source: Shakahashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry
Year: 1989 Vol: 3 Page: 317
Keywords: Diffusion, Liquids, Copper (II) sulfate, Iodine
Rating: 
Hazard: Some
- Inhalation hazard
- Acute toxicity hazard
- Aquatic toxicity hazard
- Specific organ toxicity – thyroid
Effectiveness: Average
- Mild effects are seen by audience
- Time to results is high
- Good connection from demo to course material
- Contrast between systems is noticeable
- Low failure rate
Difficulty: Low
- Demo does not involvement deep attention
- Manipulations are simple for most to perform
- Simple procedures
Safety Precautions:
- Eye protection required
- Gloves required
- Absorbent material on hand
- Avoid exposure to mists or vapors
- Prevent release of reagents to the environment
Class: Entropy, Thermodynamics, Properties of Solutions
Division: General, Physical Chemistry
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