TESTING FOR THE PRESENCE OF OXYGEN
07.06.18
Aim: To carry out a test for the presence of oxygen gas (o2)
Equipment: A pea-sized amount of manganese dioxide (MnO2), boiling tube, bottle of hydrogen peroxide (H2O2), safety glasses, wooden splint, Bunsen burner, test tube rack.
Method:
- Light your Bunsen burner.
- Add the manganese dioxide to the boiling tube and place it in your test tube rack.
- Add 2 ml of hydrogen peroxide.
- Light a splint and let it burn for a while.
- Blow the splint out and insert the glowing embers into the mouth of the boiling tube.
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