My hypothesis is that the higher the concentration of hydrogen peroxide the more catalase would be catalysed

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Biology coursework: Catalase and hydrogen peroxide

Introduction

My experiment is about the effects of the concentration of hydrogen peroxide used, on the reaction rate (how long it takes for a reaction to happen). My hypothesis is that the higher the concentration of hydrogen peroxide the more catalase would be catalysed (a catalyst is a chemical that speeds up a reaction without being used up itself) in a minute so more oxygen gas produced. This means that the rate of reaction is quicker. This is because in a low concentration of hydrogen peroxide there are many unoccupied active sites so the rate of reaction is low and a smaller amount of products will be formed in a set amount of time. When the concentration of hydrogen peroxide is increased more enzyme-substrate complexes can be formed for the same amount of catalase, increasing the rate of reaction and the products also increase as a result. Increasing the concentration further will have no effect to the rate of reaction because all the active sites will have been occupied and no more enzyme substrate complexes can be formed.

H2O2 + catalase H2O + O2

Hydrogen peroxide

Hydrogen