Question

why magnesium ribbon cleaned before burning a white layer of magnesium due to attack of my stuff so magnesium ribbon cleaned before burning

Answer 1

magnesium forms a protective layer of magnesium carbonate. To remove this layer the magnesium ribbon must be cleaned before burning such that it can readily combine with oxygen

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.