Practical: Effect of Catalysts on Rate of Reaction (Edexcel IGCSE Science (Double Award) (Modular)): Revision Note

Practical: Effect of catalysts on rate of reaction

Aim:

To investigate the effect of different solids on the catalytic decomposition of hydrogen peroxide

Diagram:

Diagram showing the apparatus needed to investigate the effect of a catalyst on the rate of reaction

Method:

1. Add hydrogen peroxide into a conical flask

2. Use a delivery tube to connect this flask to a measuring cylinder upside down in water trough

3. Add the chosen catalyst into the conical flask and close the bung

4. Measure the volume of gas produced in a fixed time using the measuring cylinder

5. Repeat experiment with different catalysts and compare results

6. Catalysts to try could include: manganese(IV) oxide, lead(II) oxide, iron(III) oxide and copper(II) oxide

Result:

• The data for different catalysts can be plotted on the same graph and the relative rates compared