Question

Why should a magnesium ribbon be cleaned before burning in air?​

Answer 1

Answer:

To remove the Magnesium oxide layer from the ribbon which may prevent or slow down the burning of magnesium ribbon.

Explanation:

Magnesium ribbon should be cleaned with sandpaper before burning in the air. ... To remove the Magnesium oxide layer from the ribbon which may prevent or slow down the burning of magnesium ribbon. Unwanted impurities deposited on the magnesium ribbon can be removed and only pure magnesium can be used for the reaction.

Answer 2

Answer:

Explanation:

Cleaning the surface of the magnesium ribbon will remove the oxide layer from the surface and thus it will allow the ribbon to burn effectively to get the desired result. The magnesium ribbon burns in air producing intense heat and producing bright white light