This project investigates the rate of decomposition of hydrogen peroxide when catalyzed by different substances. Students will measure reaction rates using different catalysts and analyze kinetic data to understand the reaction mechanisms.
If different catalysts are used in the decomposition of hydrogen peroxide, then the rate of reaction will vary depending on the efficiency of each catalyst.
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Measure 100 ml of hydrogen peroxide and pour into a graduated cylinder.
Add a small amount of manganese dioxide to the cylinder.
Start the stopwatch and record the time taken for bubbles to cease.
Repeat steps 1-3 with potassium iodide and yeast as catalysts.
Measure the temperature of the reaction mixture for each trial.
Record all observations and reaction times in a data table.
Analyze the data to determine the efficiency of each catalyst.
Graph the reaction rates for each catalyst for comparison.
Discuss the results and any experimental errors that occurred.
Draw conclusions about the catalytic efficiency related to kinetic properties.
It is expected that different catalysts will show varying degrees of efficiency in decomposing hydrogen peroxide, with manganese dioxide likely to be the fastest. The data should reveal trends in reaction rates that correlate with catalyst types.
Type of catalyst
Rate of decomposition of hydrogen peroxide
Volume of hydrogen peroxide, Temperature, Amount of catalyst, Environmental conditions
Handle all chemicals with care and wear safety goggles throughout the experiment to protect eyes from splashes.
Use clear visuals like graphs to present reaction rates.
Explain the role of catalysts in chemical reactions.
Discuss the importance of catalysts in industrial processes.
Include a video of the reaction to enhance engagement.
