What gases can a flying balloon be filled with?
Today we’ll discuss two curious properties of hydrogen. Can you guess what they are?
Attention! All experiments are performed by professionals. Do not attempt.
- flask with tartaric acid solution;
- magnesium strips;
- thread with screw-nut;
- fireplace matches.
Magnesium and tartaric acid react to release hydrogen gas:
C₄H₆O₆ + Mg → MgC₄H₄O₆ + H₂↑
Hydrogen gas is 15 times lighter than air, and therefore a balloon filled with it can float. It explodes if exposed to flame due to the violent reaction between hydrogen and oxygen, which forms water:
2H₂ + O₂ → 2H₂O
The energy released in this reaction can safely be utilized to power so-called hydrogen vehicles.
Amusing and safe experiments await you in the MEL Chemistry subscription!