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Created with Fabric.js 1.4.5 Why are they used? Catalysts are used to speed up the rate of a reaction,However they do not change by the end of the reaction They are also used in the human body and they are able to make very difficult reactions happen They lower the activation energy needed They can speed up reactions Simple errors can be made because thereaction is going so quick. Advantages Advantages & Disadvantages Catalyst in Action Jasmine Mercer How are catalysts developed? 3rd March Types of catalyst Disadvantages They can be re-used They can be quite costly They can be poisoned by waste products They are only requiredin small amounts Most catalysts only work with one reaction(different catalyst neededfor each reaction) Sulfuric Acid ethanol -> ethene + water C2H5OH(l) -> C2H4(g) + H2O(l) Catalysts are developed in many different ways. This includes testing the catalyststo see how they can be improved. They could be tested for the time that it takes forthe catalyst to have worked. They could also be tested for their surface area as this helps speed up reactions. Nanoparticles have a large surface area and therefore make goodcatalysts as they can react very quickly. Two important things that affect how a catalyst acts is its size and electronic properties. Equation for the dehydration of ethanol Advantages & Disadvantages They can be re-used They lower the activationenergy needed for thereaction to occur They can be quitecostly The reactions canoccur at lower temperatures The process/reaction is less time consuming Equation for the decomposition of hydroden peroxide Maganese Dioxide Hydrogen Peroxide -> Water + OxygenH2O2(l) ->H2O(l)+O2(g)
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