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Using zinc metal, and zinc oxide, carbonate, sulfate (VI), chloride and bromide, safely in practical work.
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This guide describes a method of finding the iodine number for fats and oils using bromine that does not require a fume cupboard and can therefore be used as a class activity.
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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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This important demonstration proves the existence of ions as charged particles. Using microscale, it can be carried out safely and quickly in a well ventilated laboratory and projected onto a screen s.. more
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Brief risk assessment guidance and experimental notes for a range of practical activities involving hydrochloric acid, hydrobromic acid, hydriodic acid and Group 1 halide salts (Hazcards 47A, 47B, 47C.. more
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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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Brief risk assessment guidance and experimental notes for a range of activities involving aluminium metal (Hazcard 1).
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Concentrated sulfuric(VI) acid reacts with solid samples of Group 1 halides (chloride, bromide or iodide) to form hydrogen halide gases and other products. The activity illustrates the behaviour of co.. more
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The electrolysis of copper(II) chloride solution was cited in many GCSE exemplar procedures. With large-scale equipment, the volume of chlorine produced, caused breathing difficulties for some student.. 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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Showing results 1 to 10 of 289
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