Department of Chemistry and Biochemistry

Belousov-Zhabotinskii Reaction (variation)

Solutions

• Solution A: 0.6M NaBrO₃
                     0.6M H₂SO₄
• Solution B: 0.48M CH₂(COOH)₂ (malonic acid)
• Solution C: 1gm NaBr per 10ml H₂O
• Solution D: 0.025M ferroin sulfate

Procedure

1. Mix 14ml solution A with 7ml solution B and 2ml solution C in that order and stir or shake until the orange (bromine) color disappears from the solution.
2. Add 1ml solution D and stir until the solution is a homogeneous red.
3. Pour enough into a petri dish on an overhead projector to cover the bottom with a thin (~1mm) layer.

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Last Updated: 5/23/02