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Belousov-Zhabotinskii Reaction
Materials
600ml Beaker
Magnetic Stir Plate
Magnetic Stir Bar
Premeaured Solutions (A, B , C, D, E and F)
Solutions
Solution A: 0.5M Potassium Bromate (KBrO3) 150ml ( 41.8g in 500ml DI water)
Solution B 6M Sulfuric Acid 15ml (84.2 ml in 250ml Di water)
Solution C: 0.5M Malonic acid 62.5ml (13g in 250ml DI water)
Solution D 0.5M Potassium Bromide (KBr) 25ml (6g in 100ml DI water)
Solution D: 0.019M Cerium Ammonium nitrate (Ce(NH4)2 (NO3)6) in 2.7M Sulfuric Acid (H2SO4)
62.5ml (112ml of 3M H2SO4, dilute to 250ml with DI water + 2.6g Cerium Ammonium Nitrate
Solution F: Ferroin Indicator 25ml
Procedure
- Add solutions A,B, and C into a 600ml beaker with a magnetic stirrer. Stir for atleast 5 minutes. (Color change from a dark yellow to light yellow will be observed.
- Add solutions D,E and F then stir for 30 seconds.
- Color changes from green to purple to rusty red to blink of blue (if you blink you miss the blue) and finally back to gorgeous green. Cycle takes ~1 min, with the cycle lengthening with time.
Waste Management
Return to dispensary for proper disposal