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The Landolt method (potassium iodate(V) and sodium metabisulfite) was the first iodine clock reaction described, and can be used for a simple two-reagent investigation.
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Iodine clock reactions produce iodine, which reacts with starch to give the distinct blue/black colouration. The iodide-persulfate method is one of the simplest clock reactions, involving simple kinet.. more
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The kinetics of a reaction can be investigated by determining how the rate of the reaction varies with the concentration of the reactants. The Harcourt-Essen method is useful as the reaction kinetics .. more
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The kinetics of a reaction can be investigated by determining how the rate of the reaction varies with the concentration of the reactants. The 'disappearing pink' method provides an alternative to iod.. more
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Iodine clock reaction - Iodide persulfate method
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Iodine clock reaction Harcourt Essen method
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Iodine clock reaction - Landolt method
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A straightforward and commonly-used practical activity
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Offers a straightforward method for investigating the effect of pH on an enzyme.
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This guide gives details of a simple demonstration of enzyme activity using the digestion of starch by amylase. It can also be used to investigate the impact of different conditions on how quickly.. more
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