Kinetics- Traveling Waves of Color

Traveling Waves of Color

Description: This oscillating system produces different colors that move throughout the solution. This is often done on an overhead projector.

This demonstration is also available on JCE “Chem Demos” Laser disc.

This demonstration is available on JCE “Chemistry Comes Alive!” CD-ROM, Vol. 7

Source: Shakhashiri, B.Z. Chemical Demonstrations: A Handbook for Teachers of Chemistry

Year: N/A   Vol: N/A   Page: N/A

Keywords: BZ  Reaction, Oscillator, Translational wave, Ferroin,

Ratings:

Hazard: Medium

  • Acute toxicity hazard – oral
  • Aquatic toxicity hazard
  • Inhalation hazard
  • Oxidizer
  • Carcinogenicity
  • Eye irritation
  • Skin corrosion hazard
  • Electric shock hazard

Effectiveness: Average

  • Somewhat connected conceptually to course material
  • Mild effects are seen by audience
  • Time to results is high
  • Moderate failure rate

Difficulty: High

  • Use of sensitive reagents
  • Multi-step procedures with varying results
  • Volume-dependent addition
  • Demo requires training or practice to perform correctly
  • Use freshly prepared reagents
  • Demos in which a display is used

Safety Precautions:

  • Eye protection required
  • Gloves required
  • Use of UL approved three-prong plug and outlet
  • Avoid inhalation of vapors
  • Absorbent materials on hand
  • Perform in a well-ventilated area

Class: Kinetics

Division: General, Physical Chemistry