Testing for the presence of Oxygen
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:
1) Light you Bunsen burner2) Add the manganese dioxide to the boiling tube and place it in your test tube rack.
3) Add 2 mL of hydrogen peroxide
4) Light a splint and let it burn for a while
5) Blow the splint out and insert the glowing embers into the mouth of the boiling tube,
Observations:
When the splint was inserted into the boiling tube, pure oxygen gas appeared.
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