Famous iodine clock reaction: oxidation of potassium iodide by hydrogen peroxide.
Mixture A:
- 10 mL 2.0 M sulphuric acid
- 10 mL 3% hydrogen peroxide
- 80 mL water
Mixture B:
- Solution of 0.04 g sodium thiosulfate pentahydrate in 20 mL water
- Solution of 0.9 g potassium iodide in 5 mL water
- 4 mL starch solution
- 71 mL water
21 авг 2024