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Question

Why should magnesium ribbon be cleaned before burning in air ?

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Solution

Magnesium is a reactive metal and amongst the most common elements found on the earth. So it reacts with atmospheric oxygen gas and makes the magnesium oxide which covers the surface of Mg-metal.

So, when we perform the oxidation of magnesium we clean the Mg-ribbon by a sand paper so that the magnesium oxide is removed and only the metal could be burnt.


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