Question

Why should magnesium ribbon be cleaned before burning in air
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Answer 1

Answer:

Magnesium ribbon should be cleaned before burning in air this is because it has an oxide coating on it which prohibits its reaction with air or we can say that it slows down the reaction taking place. magnesium ribbon be cleaned with sandpaper befor burning because a lyer of mgo can be aleready their which don't allow it to burn .

Answer 2

magnesium ribbon be cleaned before used because magnesium ribbon reacts with oxygen present in air to form a protective and inert layer of mg oxide on its surface.this layer is unreactive and prevents the ribbon from burning

Explanation:

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