Catalase is the enzyme itself that decomposes H2O2. The hydrogen peroxide is used to be decomposed so that we can see the rate of decomposition through this lab. The role of sulfuric acid is to stop the reaction. The role of potassium permanganate is to help with titration. It is also an oxidizing agent. The relationship between potassium permanganate and hydrogen peroxide decomposition is that potassium permanganate is similar to a catalase where it helps break down the substance. It helps break down the hydrogen peroxide.
My hypothesis was supported by the data. I had predicted that at the beginning of the reaction, the rate of the reaction would be the highest. I also had predicted that the rate of the reaction would be the slowest during the end of the reaction and that was also correct. However, my graph did not match the “perfect data”. The perfect data shows that the substance used is constantly increasing over time and then slowly at the end, however my graph has decreases in the middle of the reaction. This can be improved by being more careful and recording data more accurately.
There are many errors that could have been made with this lab. An error that could’ve occurred is that we recorded the data incorrectly. This would mess up the experiment as a whole for documentation of data is very important. Also, we could have also put the wrong amounts of substances by misreading the syringe. Having the right amount is very important because it affects the whole experiment. Another error is that we used the wrong substance amount, for example when it says uses 5 mL to titrate, we could have used 10 by accident.
There are many more errors. Another one error that we likely have made is when the instructions said gently swirl, we swirled very vigorously. This could affect the results because maybe the color would only come out if we swirled the cup gently. Also, we used the wrong syringe to titrate. We did not use the syringe that was...