Question

why should a magnesium ribbon be cleaned before burning in air

Answer 1

Heyy mate ❤✌✌❤

Here's your Answer..

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Magnesium Ribbon should be cleaned before burning in air because Magnesium is very reactive metal and when kept in air , it react with oxygen and forms a layer of Magnesium oxide.

To remove the layer of oxide from Magnesium we need to clean it.

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Answer 2

♤ When Magnesium ribbon is exposed in the atmosphere it form a layer of magnesium oxide on its surface.

♤ This layer of magnesium oxide is stable compound to prevent further reaction of magnesium with oxygen.

♤ Hence, it should be cleaned before burning in air to remove this layer so that the metal can be exposed to air properly.