Question

give reason- mg ribbon is to be cleaned before burning in air.

Answer 1

Hey friend

Here is your answer

Magnesium ribbon is to be cleaned with sand paper before burning on air to remove the protective layer of magnesium oxide from its surface.

Answer 2

Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer ofmagnesium oxide on its surface. ... The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to airproperly.
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