AQA Jun 2013 Paper 2 Q7

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do not write outside the box chlorine can be used to make chlorinated alkanes such as dichloromethane a write an equation for each of the following steps in the mechanism for the reaction of chloromethane ch cl with chlorine to form dichloromethane ch cl initiation step first propagation step second propagation step the termination step that forms a compound with empirical formula ch cl marks b when chlorinated alkanes enter the upper atmosphere carbon chlorine bonds are broken this process produces a reactive intermediate that catalyses the decomposition of ozone the overall equation for this decomposition is o o b i name the type of reactive intermediate that acts as a catalyst in this reaction mark b ii write two equations to show how this intermediate is involved as a catalyst in the decomposition of ozone equation equation marks turn over wmp jun chem there are no questions printed on this page do not write on this page answer in the spaces provided wmp jun chem

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