Question

why should a magnesium ribbin is cleaned bedore burning it
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Answer 1

Answer:

The magnesium ribbon is cleaned before burning it because magnesium is a high reactive metal and when it is exposed to the environment it reacts with the environment oxygen and this oxygen forms a layer on this ribbon. So to remove that layer we have to clean the ribbon.

Answer 2

• Magnesium is a very reactive metal. So, when it is stored, it reacts with oxygen in the presence of air to form a layer of magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. Therefor, magnesium ribbon is cleaned in order to remove the layer of magnesium oxide so that it can burn in air.