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How do temperature and concentration affect the rate of decomposition of hydrogen peroxide by the enzyme catalase?
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| Submitted: Tue Mar 16 2004
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How do temperature and concentration affect the rate of decomposition of hydrogen peroxide by the enzyme catalase? Aims: This is an experiment investigating how the concentration of hydrogen peroxide (substrate) and temperature affect the rate of reaction of the enzyme catalase. Introduction An enzyme is a globular protein found in living cells, they have the ability to catalyse an experiment, therefore they are often used to speed up reactions that don't happen fast enough naturally. Enzymes speed up a reaction by lowering the activation enthalpy (Ea), thus meaning that more collisions between substrate molecules and enzyme molecules result in a reaction, see fig 1 below to see how the activation enthalpy of an experiment varies in the presence of an enzyme Fig. 1: How Ea varies when a catalyst is and isn't present The graph shows that when there is no enzyme present then less of the molecules possess the activation energy...
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