Leybold Chemistry Experiments.

• Chemical reactions and stoichiometry
• Gas laws
• Production of gases
• Reactions with gases

Experiment C1.4.1.1 determines the oxygen content of air. The determination of the oxygen content uses the fact that certain substances can react quantitatively with oxygen to form oxides. For this purpose, the oxygen of a defined volume of air is reacted with copper and removed from the gas space as copper oxide.

From the resulting reduction in volume, the oxygen content of the original air can be easily calculated in percent by volume. The gas remaining in the apparatus can be studied further: One can find out that it does not sustain combustion.