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Determination of the oxygen content of air

VC1.4.1.1
Determination of the oxygen content of air
Determination of the oxygen content of air

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Description

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 per cent by volume. The gas remaining in the apparatus can be studied further: One can find out that it does not sustain combustion.

Components of equipment sets

1 6640771  4  Reaction tube, quartz, 160 x 20 mm Ø, GL 18 LD
1 6640791 Copper wire gauze roll 80 x 7.5mm LD
1 665912  4  Gas syringe, 100 ml LD
1 665914  4  Gas syringe, 100 ml with 3-way stopcock LD
1 665936 Immersion tube manometer, after Schiele LD
1 666714  8  Cartridge burner, DIN type LD
GHS02 Warning H220
1 666724  8  Wide-flame attachment LD
1 30076  8  Laboratory stand II LD
6 6664660  4  Adhesive magnetic board CPS, 300 mm LD
3 6664665  4  Holder, magnetic, size 5, 30...32 mm LD
2 6664661 Holder, magnetic, size 1, 9...11 mm LD
1 666428  4  Panel frame C100, two-level, for CPS LD
1 667312  8  Glass connector, 2 x GL 18 LD
additionally required: candle, lighter

Experiment Instructions

YouTube-Video YouTube-Video The new chemistry presentation system CPSflex
PDF (Experiment description) PDF (Experiment description) C1.4.1.1 Determination of the oxygen content of air
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