In this experiment, the combustion of hydrogen in pure oxygen (or in air oxygen) under different conditions was demonstrated.
Combustion of hydrogen in oxygen:
2H2(g) + O2(g) → 2H2O(g)
Hydrogen (especially in mixtures of hydrogen and oxygen) is a highly flammable gas!
1) HYDROGEN: “Hydrogen from metal and acid”
2) HYDROGEN: “Hydrogen from metal and alkali”