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Investigating Factors that Affect the Rate of Reaction of the Decomposition of Hydrogen Peroxide (Only method and tables no calculations0

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Investigating Factors that Affect the Rate of Reaction of the Decomposition of Hydrogen Peroxide Emilio Lanza Introduction- In this experiment, the rate of reaction, calculated in kPa sec-1, of the decomposition of hydrogen peroxide will be investigated to see how the change in concentration of hydrogen peroxide and the change in temperature affect the rate of reaction. The data will be collected by measuring the gas pressure. The product of Hydrogen Peroxide is oxygen in a gas state thus it is mandatory to use the gas pressure sensor. By calculating the difference of the gas pressure divided by the amount of time from the raw data collection it is able to find the rate of reaction of the decomposition of hydrogen peroxide. Control Variable- 1mL of yeast (catalyst) is being used in every trial. The volume of H2O2 is always 4 mL, even though the concentration changes and the sizes and type of test tube was the same because it can change the pressure. Independent Variable- Concentration of H2O2 (M) and the temperature (°C) Dependent Variable- The rate of reaction of the decomposition of hydrogen peroxide → rate of reaction = . ...read more.


Transfer the yeast solution from its test tube into the test tube containing H2O2 solution and shake lightly to mix the two solutions together. As quick as possible seal the test tube with the one-hole stopper connected to the Gas Pressure Sensor and place the test tube back into the water by holding the test tube with the test tube holder. Next click collect data on the LoggerPro Program to begin collecting data. (THE LAST TWO STEPS ARE CRUCIAL AND MUSTBE DONE AS QUICK AS POSSIBLE TO AVOID ANY EXTERNAL INFLUENCES). It is needed to collect the data for three minutes once three minutes is up, carefully remove the test tube from the water by holding onto the test tube holder and set it in the test tube rack. Next slowly and carefully begin to tale out the stopper from the test tube allowing the gas pressure to escape. Store the results from the first trial by selecting Store Latest Run from the Experiment menu. After doing this a table of data and the graph will be saved. Then make sure to clean and trash the solution that is in the test tube. ...read more.


Make sure to find the average temperature (°C) and include it in the analysis table. Then compare and contrast the different effects the rate o reaction caused by the change in concentration of H2O2 and in the change of temperature. (The data table is an example of the data table that will be printed from the computer after each trial and part is done from LoggerPro Progam. The only thing is that it will record the gas pressure until 3 minutes. Again only an example how it should look like). The Gas Pressure from the Decomposition of H2O2 After Every Second Time (sec) Gas Pressure (kPa) 1 2 3 4 5 6 7 8 9 10 Data Analysis Table for the Decomposition of H2O2 Part # Average Temperature (°C) Average Rate of Reaction (kPa sec-1) Concentration of H2O2 in % Concentration of Yeast (M) Part 1 Part 2 Part 3 Part 4 Part 5 The Temperature (°C) of the Water During Each Part of the Lab and Each Trial Parts of Experiments Trial 1 Trial 2 Trial 3 Part 1 Temperature (°C) Part 2 Temperature (°C) Part 3 Temperature (°C) Part 4 Temperature(°C) Part 5 Temperature (°C) ...read more.

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