Kinetics- An Orange Clock Reaction

An Orange Clock Reaction

Description: Two beakers of a clear and colorless liquid are combined. After several seconds, the mixture turns orange.

Source: UW Card Catalog

Year: N/A  Vol:  N/A    Page: N/A

Keywords: Clock reaction, Induction period, Iodate, Precipitate, Complexation

Rating:

Hazards: Medium

  • Oxidizing solids
  • Skin irritation
  • Skin corrosion
  • Eye irritation
  • Serious eye damage
  • Specific target toxicity – respiratory system
  • Acute toxicity – oral
  • Short term (acute) aquatic toxicity
  • Long term (chronic) aquatic toxicity
  • Germ cell mutagenicity
  • Reproductive toxicity
  • Long term (chronic) organ toxicity – CNS

Effectiveness: Average

  • Results are observable without guidance
  • Good connection from demo to course materials
  • Mild effects are observed by audience
  • Contrasts between behavior of systems is noticeable
  • Time to results is low

Difficulty: Medium

  • Adding reagents in concert or sequentially
  • Use of toxic substances
  • Procedures with some intermediate steps to result

Safety Precautions:

  • Eye protection required
  • Gloves required
  • Lab coat recommended
  • Prepare in a well-ventilated area
  • Avoid contact with dusts, mists, or vapors
  • Absorbent materials on hand
  • Avoid release of reagents to the environment

 

Class: Kinetics, Solubility

Division: Inorganic Chemistry, General Chemistry