Decomposition of Hydrogen Peroxide Lab Essay

In conclusion it was found that the activation energy of the rot of total heat peroxide with the help of the atom smasher KI is . When comp atomic number 18d to an effective value there was a percent difference of 43%. In fact the actual value that was used is the activation energy of hydrogen peroxide in the absence of a catalyst. So in reality it is likely that a catalyst would cause the activation energy to be until now smaller, and the percent difference would be even greater. The tho reasonable explanation as to why the mensural activation energy is so much greater is that somewhere during the experiment a random delusion occurred but since only ii trials were done, it is impossible to pass with flying colors where it exactly occurred.When looking at interprets 1-4 it corporation be seen that as time went on the pressure change magnitude exponentially. This mothers sense because over time the amount of petrol increased, and so the pressure would increase too. In accompaniment in graphs 1-4, if a curved line of beaver fit were to be plotted, than the y-intercept would show the pressure of the board at the moment the experiment was conducted.There were sooner a few flunkes and limitations in this lab. The biggest weakness in this lab was probably the fact that the experiment was conducted at only twain different temperatures. This in dramatic play only allowed for two points to be graphed on graph 5 (ln K vs 1/T). Having only two points on a graph is very wrong and imprecise. This is because if for some reason a random error occurred during the procedure, than it would be impossible to tell, as there are no other points to compare with. Two trials are not sufficient enough to collect results from a minimum of five trials should have been done at different temperature increments. Another limitation was the fact that the two different temperatures only had a difference of 10. As seen on graph 5, the slight change in temperature cause d the slope to be extremely steep.A weakness in the lab was the fact that the lab was conducted over a period of two twenty-four hourss. This in pass on caused the temperatures to be different for spokesperson two and part three of the experiment when the temperature should have been kept the same. This is seen in the results, during part two the temperature of the water tub was 21.5 and the sign tramp was 0.062kPa/s. But since the cast order of was stubborn to be one, if the molarity of the were to be halved, and the molarity of the catalyst KI were to be doubled, than ideally the initial rate should have remained the same.But it didnt, since part three was conducted at a different day, the temperature of the water bath that day was 22.7 and that slight change in temperature is what caused the initial rate to increase to 0.076kPa/s. Lastly, when the test tube was put in the water bath, the temperature of the water bath was constantly changing because the temperature of the water was relatively lower than the room temperature. This in eddy is what caused fluctuation in the temperature readings. This in turn could have also caused the initial rate to leave because as discussed earlier, even the slightest change in temperature causes the initial rate to change.This experiment cigarette be meliorate in many ways. One of the main things that can be done is that the experiment should be conducted at different temperatures so that at least a minimum of 5 k values against 1/T can be plotted on graph 5. In addition, the temperature increments should have a relatively broad range, which in turn will make the data and the trends clearer. In addition, the experiment should be conducted on the same day so as the temperature can be kept constant for certain k values. In order to keep the temperature of the water bath constant, the experiment should be conducted in a unappealing environment so that less energy is addled to the environment.Works CitedThe Catal ytic Decomposition of Hydrogen Peroxide. Purdue University College of accomplishment Welcome. Web. 12 Oct. 2009..