Question

why should a magnesium ribbon be cleaned before burning in air

Answer 1

howdy !! your answer is


magnesium is very reactive metal when it keep in air it react with oxygen and form a layer of magnesium oxide on magnesium ribbon which is unable to burn .
so, we clean magnesium ribbon before burning to remove this oxide. .

hope it help you

Answer 2

Magnesium ribbon should be cleaned before burning in the air because:

• Magnesium is chemically very active, it replaces hydrogen in bubbling water and an incredible number of metals can be created by a thermic decrease of its salts and oxidized structures with magnesium.
• Magnesium is a highly reactive element that forms a white layer of magnesium oxide when it combines with oxygen in the air. This layer will not burn.
• Impurities that have accumulated on the magnesium ribbon can be removed, leaving just pure magnesium for the reaction.