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Why magnesium ribbion shoud be cleaned before burning |
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Answer» To remove the layer of oxide? Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Its because magnesium is a reactive metal which react with oxygen when exposed to air and a outer layer is form black in colour after reaction. eg.2Mg + O2 -------------> 2MgO for removing the oxide of magnesium. |
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