Temperature vs. rate of reaction

Temperature vs. rate of reaction - Temperature vs Rate of...

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Temperature vs. Rate of Reaction By- Gautham Giri Biology Enzyme Experiment #1 Lab Report I NTRODUCTION The reaction rate (how fast a chemical reaction happens) is an important factor to control. Sometimes, you want a reaction to take place rapidly, such as when you are removing tarnish from a metal surface. Other times, you want a reaction to happen very slowly, such as when you are depending on a battery as a source of electrical energy. For this experiment, we were to form groups, in which our group had 4 students including me. Our group was assigned to test how the temperature of the catalyst (enzymes) affects the rate at which the substrate H 2 O 2 splits up into H 2 + O 2 (which is the reaction). H 2 O 2 is a dangerous compound, and is split into oxygen and hydrogen (which are two separate gases) and the catalase (a common enzyme which is found in animal and plant cells) speeds this reaction up. H YPOTHESIS Enzymes are catalysts that speed up or slow down a reaction, without themselves being used up. The reaction in this experiment is: H 2 O 2 = H 2 + O 2 In this experiment, we used enzymes from potatoes. More of how we did this is explained in the procedure section of this report. This certain type of enzymes can be called catalase. Basically, our hypothesis was that the more the temperature of the catalase solutions, the faster the reaction will occur (which means that more the temperature, the faster the H 2 O 2 substrate will split up into hydrogen and oxygen). We came up to this hypothesis because the more the temperature, the more the energy. And, the more the energy, the faster the reaction will occur (because the molecules will collide with each other quicker). Let’s move on further and see whether my hypothesis was right or wrong. 1 | P a g e Gautham - 2/9/09
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O BJECTIVE H 2 O 2 is a short form for Hydrogen peroxide. The main purpose of this experiment was that we learn about enzymes; how they affect the rate of a reaction, and how different factors affect the way in which they react (in this case, the speed of the reaction).Our group was testing on how temperature affects the rate of the reaction, and we had to test the catalase with three different temperatures: one inside the refrigerator, on in the air-conditioned room, and one outside the lab, in the normal outside temperature. We had to do this experiment thrice, according to the scientific method. Doing it three times for each temperature, gave us more accurate results.
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This note was uploaded on 09/06/2011 for the course BIO 201 taught by Professor Mr.bajom during the Spring '09 term at Abu Dhabi University.

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Temperature vs. rate of reaction - Temperature vs Rate of...

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