Why should magnesium ribbon be clean before burning in air?
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Magnesium ribbon must be cleaned before burning in air so that the layer of magnesium oxide (which is formed due to reaction of magnesium with air) can be removed in order to get the desired chemical reaction.
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Magnesium ribbon is cleaned before burning it in air in order to remove oxide layer, presence of which slowdowns the oxidation process. So, by cleaning it, the burningprocess takes place easily......
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