Question

Why Is Magnesium Ribbon Cleaned Before Burning

Answer 1

Answer:

Explanation: it make layer with oxygen

Answer 2

Answer: A magnesium ribbon is cleaned before burning in air (oxygen) in order to remove the thin layer of magnesium oxides, hydroxides or carbonates that may have formed due to slow reaction with the atmosphere.

More to know:

• It is cleaned by rubbing it with sandpaper.

• The reaction that takes place when it is burnt in air is as below:

2Mg + O₂ ----------------> 2MgO

• It burns with a dazzling white flame.
• MgO (most metallic oxides in general) are basic in nature because they form alkalis upon reaction with water.

MgO + H₂O ------------> Mg(OH)₂