A lab experiment on the effect of increased concentration on the decomposition of h2o2
The chemical formula for the reaction is, Since this is a decomposition reaction, it is exothermic. Evaluation Overall, I believe my experiment went well and that I gained sufficient results because I repeated each concentration three times and investigated eight concentrations in total.
Figure 2 shows the relationship between the rate of reaction and the hydrogen peroxide concentration. Surface Area of Yeast Molecules I ground up the yeast to try to make the surface area as similar as possible because surface area is a major factor in my experiment.
Prediction: I predict that the higher the amount of Hydrogen Peroxide I use then the faster the displacement reaction will be. Error Analysis: This lab was somewhat free of error, with our rate constant values being relatively constant.
Also the shortest tube was used to reduce systematic errors.
Decomposition of hydrogen peroxide experiment lab report
Therefore, as enzymes are not altered during the chemical reaction, they are reusable. Labudda Lab Date: November 11, The effect of concentration of catalase on the rate of decomposition of hydrogen peroxide Research Question How does different concentration of catalase change the rate of decomposition of hydrogen peroxide into water and oxygen in a fixed time? Thus, this experiment will only consider low concentrations. If the line of best fit is correct, it would make this value an anomaly, which clearly it is not since it is the most accurate value on the graph. However, when the number of substrate molecules exceeds the available number of enzyme, the rate of reaction will no longer increase, but stay constant. Concentration of Hydrogen Peroxide The different concentrations of hydrogen peroxide that I made could not have been exactly accurate because this would have meant that the volume of gas evolved would have increased in equal steps, which it did not. The result supports the hypothesis in this experiment. The decomposition reaction of hydrogen peroxide can be boosted by injection of higher concentration of catalase into animal or plant cells if it is determined in this experiment that higher concentration of catalase yields higher rate of decomposition of hydrogen peroxide.
I will use exactly the same method as I did previously, and since I still have some yeast left, I can still use the same batch of yeast. Adding iodine, however, considerably speeds up the reaction.
based on 74 review