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Effect Of Substrate Concentration On The Activity Of Catalase

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Introduction

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Middle

47.3 18.4 17.3 14.5 10.6 9.7 Time Taken (Test 2) 43.3 19 16.7 14.9 11.2 10 Time Taken (Test 3) 52.2 17.2 18.5 11.2 8.6 7.8 Average of the Tests 47.6 18.2 17.5 13.5 10.1 9.2 Rate=30/Average (Cm3/second) 0 0.63 1.65 1.71 2.22 2.97 3.26 All the times are in seconds. The average results are all written down to one decimal place because although the stopwatch gives results to two decimal places it is impossible to get accurate times to two decimal places due to the fact that our reaction times are not fast enough to stop the stopwatch precisely. I then worked out the rates of the reactions with the equation from Rate=30/Average Time From these rates I was able to plot a graph of the rate of reaction against concentration of Hydrogen Peroxide. CONCLUSION When the concentration of Hydrogen Peroxide is increased, the rate of reaction increases at a directly proportional rate until the concentration of Hydrogen Peroxide reaches about 16%. If you double the concentration of Hydrogen Peroxide then the rate of reaction doubles as well. When the concentration is doubled from 8-16% the rate goes up from 1.65-2.97 Cm3 Oxygen produced per second, which is an increase of 1.8 times. ...read more.

Conclusion

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