- Pour some soapy water into a 1l beaker.
- Put a piece of sodium hydride and a piece of potassium superoxide into the beaker.
- When enough foam forms, ignite it with a long sliver. A small loud explosion will occur.
Creating loud bangs using sodium hydrate and potassium superoxide
Scientific name: Sodium hydrate and potassium superoxide react with water and produce hydrogen and oxygen
Wear lab gloves and eye protection. There is a serious fire risk - a fire extinguisher should be ready. Keep a distance. The explosion may be very loud! Protect your ears.
Always follow general safety recommendations. Please note that conducting chemistry experiments you must comply with the relevant legal procedures in your country.
4KO2 + 2H2O → 4KOH + 3O2
NaH + H2O → NaOH + H2
2H2 + O2 → 2H2O
Sodium hydride reacts with water to form hydrogen. Potassium superoxide reacts with water to form oxygen. These two gases mixed together form an explosive mixture.