Concentration of Hydrogen Peroxide

Effects of Different Concentration of Catalyse on Hydrogen Peroxide

Aim: In this investigation I will try to find how long it takes for the filter paper disc to rise up whilst varying the amounts of concentration of catalyse.

Prediction: I predict that the lower the concentration of catalyse the longer it will take for the filter paper disc to rise to the surface of the tube.

Equipment:

1. Hydrogen peroxide in a container 2. Flat bottom tube 3. Tweezers 4. Filter paper discs 5. Hole puncher 6. Pipette 7. Watch Glass 8. Stop Clock 9. Table of results 10. Catalyse – 6.25%, 12.5%, 25%, 50%, 100%

Method:

1. Firstly, we hole punched 15 holes using the filter paper. 2. Next, we filled the tube half way with 100% hydrogen peroxide. 3. Then we dipped the discs of filter paper into the catalyse which was in a watch glass. 4. After that, we picked the discs from the catalyse using a pair of tweezers and soaked it with catalyse and placed it at the bottom of the tube which was filled with hydrogen peroxide. 5. Next we timed how long it took for the discs to rise to the surface of the tube with a stop watch. 6. To make it a fair test we repeated it three times with the same amount of concentration of catalyses. 7. Finally, we put the results down on a table.

Table of Results:

|Concentration of |1 |2 |3 |4 |
|Catalyse | | | | |
|6.25% |300 Seconds |300 Seconds |300 Seconds |300 Seconds |
|12.5% |300 Seconds |98.55 Seconds |77 Seconds |60.18 Seconds |
|25% |36.50 Seconds |64.38 Seconds |66.32 Seconds