Experiment on Oxygen

07/06/18

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 burner

2) 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.