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Why should magnesium ribbon be cleaned before burning in air ? |
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Answer» Because magnesium ribbon has a layer of magnesium carbonate It should be cleaned to remove the oxide layer formed on it\'s surface Magnesium ribbon should be cleaned with sandpaper before burning in the air because of the following reasons:\tMagnesium very reactive element which rapidly reacts with oxygen in the air to form a white layer of magnesium oxide and this layer will not burn.\tTo remove the\xa0Magnesium oxide layer from the ribbon which may prevent or slow down the burning of\tmagnesium ribbon.\tUnwanted impurities deposited on the magnesium ribbon can be removed and only pure magnesium can be used for the reaction. It should be cleaned before burning so that the magnesium oxide formed is free of dust |
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