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# Rate of reaction Vs enzyme concentration: how does enzyme concentration affect the rate of reaction and how does the PH affect the rate of reaction.

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Introduction

Rate of reaction Vs enzyme concentration: how does enzyme concentration affect the rate of reaction and how does the PH affect the rate of reaction tools- take two test tubes, a test tube holder, a delivery tube, potatoes, cylindrical cutter, a ruler, water (PH 7 solution), a PH 9 and a PH 3 solutions- stop watch., H2O2 (perdoxide). Procedure- Six sets of results asking for 4 test tubes each were to be made. 2 sets for results of a neutral solution, 2 sets for a PH 9 solution, and 2 sets for a PH 3 solution. Each set had 4 test tubes ready to be used for it- one test tube to be filled with 1 potato piece, another with 4, and another with 7, and a last one with 10 potato pieces in it. ...read more.

Middle

These bubbles were counted for a minute which was started from the first bubble to be released. The bubble count was to give a rough idea of the energy released from the reaction. Hypothesis: the table with the highest results might be the one with the neutral solution, I also hypothesize that the more there will be potatoes the faster the reaction will be. The PH solutions will not yield high results. Results: TABLE 1 Neutral PH Amount of potatoes first try results Second try results 1 11 13 4 28 24 7 58 61 10 74 77 Table 2 10 ml of PH 9 solution mixed with 15 ml of water Amount of potatoes first try results Second try results 1 3 4 4 11 13 7 ...read more.

Conclusion

We also notice that the amount of bubbles oxygen do not increase geometrically. There is a reason for this and it is because there are too many molecules and not enough activation sites- thus they become saturated and some of the molecules do nothing (in regards of the reaction). The hypothesis was proven right. Discussion: The main problem was the precision in trying to get equal sized potato pieces. As ridiculous as it may sound it is necessary to obtain a greater accuracy. For future reference it would be easier to do the experiment with variable weights instead of variable amounts. Of course more than two sets of results would be more than good- but for that there'd be a need for more time. ...read more.

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