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Investigation to see the rate of oxygen produced by the enzyme catalase when combined with H202.

Aims: To investigate how the reaction between the enzyme catalase and H202 is effected by the concentration of catalase.

Catalysts accelerate chemical reactions that otherwise proceed slowly. The enzyme called
catalase is a catalyst. It exists in plant and animal cells and breaks down hydrogen peroxide,
H2O2, which is a byproduct of metabolism. Hydrogen peroxide is toxic if it accumulates in a
cell.
The chemical reaction accelerated by catalase is written


2H2O2 > 2H2O + O2 (gas)

The products of the above reaction are oxygen gas and water, two non-poisonous molecules. In living cells, the oxygen can be used for cellular respiration and the water can be excreted

Apparatus:
Test Tube
Bung
Measuring cylinder
Tray
Goggles
Knife
Potato
H202 (20 vol)
Potato cutting surface
Access to distilled water

Your apparatus must be set out thusly:












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